Bug: Firefox unloads tabs with entered text (Data loss issue) without low memory condition
Status: NEW
Priority: --
Created: 2022-05-12 08:13:30+00:00
Resolved: 2024-08-14 12:54:56+00:00

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:99.0) Gecko/20100101 Firefox/99.0

Steps to reproduce:

According to https://support.mozilla.org/mk/questions/1262073 firefox should only unload tabs when there is a low memory condition (<400MB is mentioned). I don't know if this has changed in the past years, but imo it doesn't matter what the threshold is.

In my case, about 16GB of my 32GB are used, and Firefox still unloads pretty much all tabs that aren't used for a certain amount of time.

Worse yet, in one of the tabs I had a submission form with a lot of text in every field, and when I came back to that tab just a day later, the page (re)loaded, and ALL entered text had disappeared. 

Even when Firefox is closed unexpectedly and re-opened (choose to recover tabs) then the entered text is still there. So Firefox evidently does have a mechanism to store entered data, yet the tab unloading feature doesn't utilize that.

(How do I attach a second file?)

```
Application Basics
------------------

Name: Firefox
Version: 99.0.1
Build ID: 20220411174855
Distribution ID: mint-001
Update Channel: release-cck-mint
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:99.0) Gecko/20100101 Firefox/99.0
OS: Linux 5.4.0-109-generic #123-Ubuntu SMP Fri Apr 8 09:10:54 UTC 2022
OS Theme: Ambiance / Adwaita-dark
Multiprocess Windows: 2/2
Fission Windows: 2/2 Enabled by default
Remote Processes: 18
Enterprise Policies: Active
Google Location Service Key: Found
Google Safebrowsing Key: Found
Mozilla Location Service Key: Found
Safe Mode: false

Crash Reports for the Last 3 Days
---------------------------------

Firefox Features
----------------

Name: DoH Roll-Out
Version: 2.0.0
ID: doh-rollout@mozilla.org

Name: Firefox Screenshots
Version: 39.0.1
ID: screenshots@mozilla.org

Name: Form Autofill
Version: 1.0.1
ID: formautofill@mozilla.org

Name: Picture-In-Picture
Version: 1.0.0
ID: pictureinpicture@mozilla.org

Name: Web Compatibility Interventions
Version: 31.0.0
ID: webcompat@mozilla.org

Name: WebCompat Reporter
Version: 1.4.2
ID: webcompat-reporter@mozilla.org

Remote Features
---------------

bug-1680034-rollout-shirley-feature-roll-out-81-to-83-release-81-83: active
bug-1690367-rollout-moving-webrtc-networking-functionality-into-i-release-87-100: active
bug-1766618-rollout-disable-websocket-over-http2-release-91-100: active
rollout-increasing-normandy-skew-out-changes-from-15-m-release-73-75-bug-1616898: active
rollout-monitor-v2-1505837: active

Remote Processes
----------------

Type: Privileged About
Count: 1

Type: Extension
Count: 1

Type: Isolated Web Content
Count: 13

Type: Preallocated
Count: 2

Type: Socket
Count: 1

Add-ons
-------

Name: Woordenboek Nederlands
Type: dictionary
Version: 4.20.19
Enabled: true
ID: nl-NL@dictionaries.addons.mozilla.org

Name: Add-ons Search Detection
Type: extension
Version: 2.0.0
Enabled: true
ID: addons-search-detection@mozilla.com

Name: Amazon.co.uk
Type: extension
Version: 1.9
Enabled: true
ID: amazon@search.mozilla.org

Name: Awesome Screenshot: Screen capture, Annotate
Type: extension
Version: 4.3.7.7
Enabled: true
ID: jid0-GXjLLfbCoAx0LcltEdFrEkQdQPI@jetpack

Name: Bing
Type: extension
Version: 1.3
Enabled: true
ID: bing@search.mozilla.org

Name: Bitwarden - Free Password Manager
Type: extension
Version: 1.58.0
Enabled: true
ID: {446900e4-71c2-419f-a6a7-df9c091e268b}

Name: Block Site
Type: extension
Version: 0.1.9
Enabled: true
ID: {07046613-1993-4b66-9dd1-9dd1ce581cb7}

Name: Disconnect
Type: extension
Version: 20.3.1.1
Enabled: true
ID: 2.0@disconnect.me

Name: Don't track me Google
Type: extension
Version: 4.26
Enabled: true
ID: dont-track-me-google@robwu.nl

Name: DuckDuckGo
Type: extension
Version: 1.1
Enabled: true
ID: ddg@search.mozilla.org

Name: eBay
Type: extension
Version: 1.3
Enabled: true
ID: ebay@search.mozilla.org

Name: Google
Type: extension
Version: 1.2
Enabled: true
ID: google@search.mozilla.org

Name: HTTPS Everywhere
Type: extension
Version: 2021.7.13
Enabled: true
ID: https-everywhere@eff.org

Name: I don't care about cookies
Type: extension
Version: 3.3.9
Enabled: true
ID: jid1-KKzOGWgsW3Ao4Q@jetpack

Name: Remove FBclid and UTM
Type: extension
Version: 1.1
Enabled: true
ID: {2e0d105e-caa5-447c-89d5-33f4efc39ef1}

Name: Tab Session Manager
Type: extension
Version: 6.12.0
Enabled: true
ID: Tab-Session-Manager@sienori

Name: Tree Style Tab
Type: extension
Version: 3.8.23
Enabled: true
ID: treestyletab@piro.sakura.ne.jp

Name: Trocker
Type: extension
Version: 2.6.20
Enabled: true
ID: {4f6dcd29-0a10-4235-a473-211111e98604}

Name: uBlock Origin
Type: extension
Version: 1.42.4
Enabled: true
ID: uBlock0@raymondhill.net

Name: WebP/Avif image converter
Type: extension
Version: 1.2.8
Enabled: true
ID: webpconverter@hilberteikelboom.nl

Name: Wikipedia (en)
Type: extension
Version: 1.1
Enabled: true
ID: wikipedia@search.mozilla.org

Name: English (CA) Language Pack
Type: locale
Version: 99.0.1buildid20220411.174855
Enabled: true
ID: langpack-en-CA@firefox.mozilla.org

Name: English (GB) Language Pack
Type: locale
Version: 99.0.1buildid20220411.174855
Enabled: true
ID: langpack-en-GB@firefox.mozilla.org

Graphics
--------

Features
Compositing: WebRender
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled
WebGL 1 Driver WSI Info: EGL_VENDOR: Mesa Project EGL_VERSION: 1.5 EGL_EXTENSIONS: EGL_ANDROID_blob_cache EGL_ANDROID_native_fence_sync EGL_CHROMIUM_sync_control EGL_EXT_buffer_age EGL_EXT_create_context_robustness EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_EXT_swap_buffers_with_damage EGL_IMG_context_priority EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_KHR_swap_buffers_with_damage EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_NOK_texture_from_pixmap EGL_WL_bind_wayland_display EGL_EXTENSIONS(nullptr): EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug EGL_EXT_platform_device EGL_EXT_platform_wayland EGL_KHR_platform_wayland EGL_EXT_platform_x11 EGL_KHR_platform_x11 EGL_MESA_platform_xcb EGL_MESA_platform_gbm EGL_KHR_platform_gbm EGL_MESA_platform_surfaceless IsWebglOutOfProcessEnabled: 1
WebGL 1 Driver Renderer: Intel -- Mesa Intel(R) HD Graphics 530 (SKL GT2)
WebGL 1 Driver Version: 4.6 (Compatibility Profile) Mesa 21.2.6
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GL_ARB_buffer_storage GL_ARB_clear_texture GL_ARB_compute_variable_group_size GL_ARB_enhanced_layouts GL_ARB_indirect_parameters GL_ARB_internalformat_query2 GL_ARB_multi_bind GL_ARB_query_buffer_object GL_ARB_seamless_cubemap_per_texture GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shading_language_include GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_stencil8 GL_ARB_vertex_type_10f_11f_11f_rev GL_EXT_shader_framebuffer_fetch GL_EXT_shader_integer_mix GL_INTEL_performance_query GL_ARB_ES3_1_compatibility GL_ARB_clip_control GL_ARB_conditional_render_inverted GL_ARB_cull_distance GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_get_texture_sub_image GL_ARB_pipeline_statistics_query GL_ARB_shader_texture_image_samples GL_ARB_texture_barrier GL_ARB_transform_feedback_overflow_query GL_EXT_polygon_offset_clamp GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_robust_buffer_access_behavior 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WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_astc WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info: EGL_VENDOR: Mesa Project EGL_VERSION: 1.5 EGL_EXTENSIONS: EGL_ANDROID_blob_cache EGL_ANDROID_native_fence_sync EGL_CHROMIUM_sync_control EGL_EXT_buffer_age EGL_EXT_create_context_robustness EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_EXT_swap_buffers_with_damage EGL_IMG_context_priority EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_KHR_swap_buffers_with_damage EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_NOK_texture_from_pixmap EGL_WL_bind_wayland_display EGL_EXTENSIONS(nullptr): EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug EGL_EXT_platform_device EGL_EXT_platform_wayland EGL_KHR_platform_wayland EGL_EXT_platform_x11 EGL_KHR_platform_x11 EGL_MESA_platform_xcb EGL_MESA_platform_gbm EGL_KHR_platform_gbm EGL_MESA_platform_surfaceless IsWebglOutOfProcessEnabled: 1
WebGL 2 Driver Renderer: Intel -- Mesa Intel(R) HD Graphics 530 (SKL GT2)
WebGL 2 Driver Version: 4.6 (Core Profile) Mesa 21.2.6
WebGL 2 Driver Extensions: GL_3DFX_texture_compression_FXT1 GL_AMD_conservative_depth GL_AMD_depth_clamp_separate GL_AMD_draw_buffers_blend GL_AMD_gpu_shader_int64 GL_AMD_multi_draw_indirect GL_AMD_performance_monitor GL_AMD_pinned_memory GL_AMD_query_buffer_object GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_AMD_shader_trinary_minmax GL_AMD_texture_texture4 GL_AMD_vertex_shader_layer GL_AMD_vertex_shader_viewport_index GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ARB_ES2_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_ES3_compatibility GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_compressed_texture_pixel_storage GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_conservative_depth GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_draw_indirect GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gl_spirv GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_stencil_export GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing GL_ARB_spirv_extensions GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_buffer_object GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map_array GL_ARB_texture_filter_anisotropic GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_64bit GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_ATI_blend_equation_separate GL_ATI_texture_float GL_EXT_EGL_image_storage GL_EXT_EGL_sync GL_EXT_abgr GL_EXT_blend_equation_separate GL_EXT_demote_to_helper_invocation GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_memory_object GL_EXT_memory_object_fd GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_pixel_buffer_object GL_EXT_polygon_offset_clamp GL_EXT_provoking_vertex GL_EXT_semaphore GL_EXT_semaphore_fd GL_EXT_shader_framebuffer_fetch GL_EXT_shader_framebuffer_fetch_non_coherent GL_EXT_shader_integer_mix GL_EXT_shader_samples_identical GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_sRGB GL_EXT_texture_sRGB_R8 GL_EXT_texture_sRGB_decode GL_EXT_texture_shadow_lod GL_EXT_texture_shared_exponent GL_EXT_texture_snorm GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array_bgra GL_EXT_vertex_attrib_64bit GL_IBM_multimode_draw_arrays GL_INTEL_blackhole_render GL_INTEL_conservative_rasterization GL_INTEL_performance_query GL_INTEL_shader_atomic_float_minmax GL_INTEL_shader_integer_functions2 GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_sliced_3d GL_MESA_framebuffer_flip_y GL_MESA_pack_invert GL_MESA_shader_integer_functions GL_MESA_texture_signed_rgba GL_NV_compute_shader_derivatives GL_NV_conditional_render GL_NV_copy_image GL_NV_depth_clamp GL_NV_fragment_shader_interlock GL_NV_packed_depth_stencil GL_NV_texture_barrier GL_OES_EGL_image GL_S3_s3tc
WebGL 2 Extensions: EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_texture_float_linear WEBGL_compressed_texture_astc WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Window Protocol: x11
Desktop Environment: unity
Target Frame Rate: 60
GPU #1
Active: Yes
Description: Mesa Intel(R) HD Graphics 530 (SKL GT2)
Vendor ID: 0x8086
Device ID: 0x1912
Driver Vendor: mesa/iris
Driver Version: 21.2.6.0
RAM: 0

Diagnostics
AzureCanvasBackend: skia
AzureContentBackend: skia
AzureFallbackCanvasBackend: skia
CMSOutputProfile: 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
Display0: 1920x1080
Display1: 1920x1080 default
DisplayCount: 2
Decision Log
HW_COMPOSITING:
available by default
OPENGL_COMPOSITING:
available by default
WEBRENDER:
available by default
WEBRENDER_QUALIFIED:
available by default
WEBRENDER_COMPOSITOR:
disabled by default: Disabled by default
blocklisted by env: Blocklisted by gfxInfo
WEBRENDER_PARTIAL:
available by default
WEBRENDER_SHADER_CACHE:
disabled by default: Disabled by default
WEBRENDER_OPTIMIZED_SHADERS:
available by default
WEBRENDER_ANGLE:
available by default
unavailable by env: OS not supported
WEBRENDER_DCOMP_PRESENT:
available by default
disabled by user: User disabled via pref
unavailable by env: Requires Windows 10 or later
unavailable by runtime: Requires ANGLE
WEBRENDER_SOFTWARE:
available by default
WEBGPU:
disabled by default: Disabled by default
blocked by runtime: WebGPU can only be enabled in nightly
X11_EGL:
available by default
DMABUF:
available by default
VAAPI:
disabled by default: VAAPI is disabled by default




Media
-----

Audio Backend: pulse-rust
Max Channels: 2
Preferred Sample Rate: 44100
Roundtrip latency (standard deviation): 231.49ms (32.38)
Output Devices
Name: Group
Dummy Output:
Input Devices
Name: Group
Monitor of Dummy Output:

Enumerate database

Environment Variables
---------------------

DISPLAY: :0
MOZ_APP_LAUNCHER: /usr/bin/firefox
MOZ_ASSUME_USER_NS: 1
MOZ_CRASHREPORTER_EVENTS_DIRECTORY: /home/mark/.mozilla/firefox/1oxfnaca.default-1536326026399/crashes/events
MOZ_CRASHREPORTER_RESTART_ARG_0: /usr/bin/firefox
MOZ_CRASHREPORTER_RESTART_ARG_1:
MOZ_CRASHREPORTER_DATA_DIRECTORY: /home/mark/.mozilla/firefox/Crash Reports
MOZ_CRASHREPORTER_PING_DIRECTORY: /home/mark/.mozilla/firefox/Pending Pings
MOZ_CRASHREPORTER_STRINGS_OVERRIDE: /usr/lib/firefox/browser/crashreporter-override.ini
MOZ_LAUNCHED_CHILD:
MOZ_APP_SILENT_START:
XRE_PROFILE_PATH:
XRE_PROFILE_LOCAL_PATH:
XRE_START_OFFLINE:
XRE_BINARY_PATH:
XRE_RESTARTED_BY_PROFILE_MANAGER:

Experimental Features
---------------------

about:home startup cache (browser.startup.homepage.abouthome_cache.enabled): false
Cookies: SameSite=Lax by default (network.cookie.sameSite.laxByDefault): false
Cookies: SameSite=None requires secure attribute (network.cookie.sameSite.noneRequiresSecure): false
Cookies: Schemeful SameSite (network.cookie.sameSite.schemeful): false
CSS: Constructable Stylesheets (layout.css.constructable-stylesheets.enabled): false
CSS: Masonry Layout (layout.css.grid-template-masonry-value.enabled): false
Developer Tools: Compatibility Panel (devtools.inspector.compatibility.enabled): true
Developer Tools: Service Worker debugging (devtools.debugger.features.windowless-service-workers): false
Firefox 100 User-Agent String (general.useragent.forceVersion100): false
Media: JPEG XL (image.jxl.enabled): false
Address Bar: show results during IME composition (browser.urlbar.keepPanelOpenDuringImeComposition): false
Web API: WebGPU (dom.webgpu.enabled): false
WebRTC Global Mute Toggles (privacy.webrtc.globalMuteToggles): false

Remote Experiments
------------------

Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.amount_written: 771571
browser.cache.disk.capacity: 1048576
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.hashstats_reported: 1
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.telemetry_report_ID: 10
browser.contentblocking.category: custom
browser.download.useDownloadDir: false
browser.places.smartBookmarksVersion: 8
browser.search.region: NL
browser.sessionstore.upgradeBackup.latestBuildID: 20220411174855
browser.sessionstore.warnOnQuit: true
browser.startup.homepage_override.buildID: 20220411174855
browser.startup.homepage_override.mstone: 99.0.1
browser.tabs.warnOnClose: true
browser.urlbar.placeholderName: Google
browser.urlbar.quicksuggest.migrationVersion: 2
browser.urlbar.quicksuggest.scenario: history
browser.urlbar.resultBuckets: {"children":[{"maxResultCount":1,"children":[{"group":"heuristicTest"},{"group":"heuristicExtension"},{"group":"heuristi
browser.urlbar.resultGroups: {"children":[{"maxResultCount":1,"children":[{"group":"heuristicTest"},{"group":"heuristicExtension"},{"group":"heuristi
browser.urlbar.suggest.engines: false
browser.urlbar.suggest.searches: false
browser.urlbar.timesBeforeHidingSuggestionsHint: 0
browser.urlbar.tipShownCount.searchTip_onboard: 4
browser.urlbar.tipShownCount.searchTip_redirect: 4
browser.urlbar.tipShownCount.tabToSearch: 39
doh-rollout.balrog-migration-done: true
doh-rollout.doneFirstRun: true
doh-rollout.home-region: NL
extensions.lastAppVersion: 99.0.1
font.internaluseonly.changed: false
idle.lastDailyNotification: 1652275292
media.benchmark.vp9.fps: 229
media.benchmark.vp9.versioncheck: 5
media.eme.enabled: true
media.gmp-gmpopenh264.abi: x86_64-gcc3
media.gmp-gmpopenh264.lastUpdate: 1571909219
media.gmp-gmpopenh264.version: 1.8.1.1
media.gmp-manager.buildID: 20220411174855
media.gmp-manager.lastCheck: 1652281142
media.gmp-widevinecdm.abi: x86_64-gcc3
media.gmp-widevinecdm.lastUpdate: 1637322402
media.gmp-widevinecdm.version: 4.10.2391.0
media.gmp.storage.version.observed: 1
media.videocontrols.picture-in-picture.video-toggle.has-used: true
network.cookie.cookieBehavior: 5
network.cookie.prefsMigrated: true
network.dns.disablePrefetch: true
network.http.speculative-parallel-limit: 0
network.predictor.cleaned-up: true
network.predictor.enabled: false
network.prefetch-next: false
network.trr.blocklist_cleanup_done: true
places.database.lastMaintenance: 1651736281
places.history.expiration.transient_current_max_pages: 140435
plugin.disable_full_page_plugin_for_types: application/pdf
privacy.cpd.downloads: false
privacy.cpd.formdata: false
privacy.cpd.history: false
privacy.cpd.sessions: false
privacy.donottrackheader.enabled: true
privacy.history.custom: true
privacy.purge_trackers.date_in_cookie_database: 0
privacy.purge_trackers.last_purge: 1652275292787
privacy.sanitize.pending: [{"id":"newtab-container","itemsToClear":[],"options":{}}]
privacy.trackingprotection.enabled: true
privacy.userContext.enabled: true
privacy.userContext.extension: treestyletab@piro.sakura.ne.jp
privacy.userContext.ui.enabled: true
security.remote_settings.crlite_filters.checked: 1652341401
security.remote_settings.intermediates.checked: 1652281391
security.sandbox.content.tempDirSuffix: ce63d170-5733-41e7-bcf6-3a88e0c5f8db
security.sandbox.plugin.tempDirSuffix: fca43f28-4491-49b5-98f0-b95f6be2aca6
services.sync.declinedEngines:
signon.importedFromSqlite: true
signon.rememberSignons: false
signon.usage.hasEntry: false
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1651844600

Important Locked Preferences
----------------------------

fission.autostart.session: true

Places Database
---------------

Accessibility
-------------

Activated: false
Prevent Accessibility: 0

Library Versions
----------------

NSPR
Expected minimum version: 4.33
Version in use: 4.33

NSS
Expected minimum version: 3.76.1
Version in use: 3.76.1

NSSSMIME
Expected minimum version: 3.76.1
Version in use: 3.76.1

NSSSSL
Expected minimum version: 3.76.1
Version in use: 3.76.1

NSSUTIL
Expected minimum version: 3.76.1
Version in use: 3.76.1

Sandbox
-------

Seccomp-BPF (System Call Filtering): true
Seccomp Thread Synchronization: true
User Namespaces: true
Content Process Sandboxing: true
Media Plugin Sandboxing: true
Content Process Sandbox Level: 4
Effective Content Process Sandbox Level: 4
Win32k Lockdown State for Content Process: Win32k Lockdown disabled -- Operating system not supported

Rejected System Calls
---------------------

Startup Cache
-------------

Disk Cache Path: /home/mark/.cache/mozilla/firefox/1oxfnaca.default-1536326026399/startupCache/startupCache.8.little
Ignore Disk Cache: false
Found Disk Cache on Init: true
Wrote to Disk Cache: true

Internationalization & Localization
-----------------------------------

Application Settings
Requested Locales: ["en-US"]
Available Locales: ["en-GB","en-CA","en-US"]
App Locales: ["en-US","en-GB","en-CA"]
Regional Preferences: ["en-US"]
Default Locale: "en-US"
Operating System
System Locales: ["en-US"]
Regional Preferences: ["en-US"]

Remote Debugging (Chromium Protocol)
------------------------------------

Accepting Connections: false
URL:

Printing
--------

Modified print settings
-----------------------

print_printer: HP_printer
print.print_bgcolor: false
print.print_bgimages: false
print.print_duplex: 1
print.print_evenpages: true
print.print_margin_bottom: 0.5
print.print_margin_left: 0.5
print.print_margin_right: 0.5
print.print_margin_top: 0.5
print.print_oddpages: true
print.print_orientation: 0
print.print_page_delay: 50
print.print_paper_data: 0
print.print_paper_height: 11,00
print.print_paper_name: iso_a4
print.print_paper_size_unit: 0
print.print_paper_width: 8,00
print.print_scaling: 1,00
print.print_shrink_to_fit: true
print.print_to_file: false
print.print_unwriteable_margin_bottom: 17
print.print_unwriteable_margin_left: 17
print.print_unwriteable_margin_right: 17
print.print_unwriteable_margin_top: 17
print.printer_HP_printer.print_orientation: 1
```


Actual results:

1. Tabs unload when there's no memory pressure
2. Unloaded tabs forget entered form data (contrary to crashed firefox)


Expected results:

1. Tabs unload only when there's memory pressure
2. Unloaded tabs should remember form data, or any unsaved data for that matter.