av9ash/GitBugs huggingface dataset:
Bug: Missing chrome or resource URL: chrome://messenger/skin/smime/openPgpComposeStatus.css
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-07 12:52:56+00:00
Resolved: 2021-08-18 22:34:40+00:00

Open msg security info when security set to S/MIME:
Missing chrome or resource URL: chrome://messenger/skin/smime/openPgpComposeStatus.css
Bug: Use generated MD5 message-ID for In-Reply-To and References header when replying to a message which is missing the Message-ID header
Status: UNCONFIRMED
Priority: --
Created: 2021-08-08 11:43:47+00:00
Resolved: 2023-10-28 21:51:31+00:00

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

1. Store sent message also in Inbox ( or same subfolder as the incoming message).
2. Set  View -> Sort by -> Threaded
3. Reply to a message which has no message-ID.



Actual results:

The new message is not shown in thread, because neither In-Reply-To and References header are set.


Expected results:

The internally generated md5 Message-ID should used for In-Reply-To and References header so the message can be shown in thread.
Bug: upon opening a NNTP message the contents does not always load
Status: RESOLVED
Priority: --
Resolution: INVALID
Created: 2021-08-08 15:41:28+00:00
Resolved: 2021-08-10 17:48:30+00:00

Opening NNTP messages causes these messages in the error console:

Error: Internal error: Type IconPath not found Schemas.jsm:1602:13
    get targetType resource://gre/modules/Schemas.jsm:1602
    normalize resource://gre/modules/Schemas.jsm:1609
    <anonymous> resource://gre/modules/Schemas.jsm:1508
    withChoices resource://gre/modules/Schemas.jsm:601
    normalize resource://gre/modules/Schemas.jsm:1500
    r resource://gre/modules/Schemas.jsm:2014
    withPath resource://gre/modules/Schemas.jsm:639
    checkProperty resource://gre/modules/Schemas.jsm:2013
    normalize resource://gre/modules/Schemas.jsm:2086
    fixedArgs resource://gre/modules/Schemas.jsm:2691
    map self-hosted:221
    checkParameters resource://gre/modules/Schemas.jsm:2686
    stub resource://gre/modules/Schemas.jsm:2792
    setIcon moz-extension://a2efe7c7-487a-4a71-8253-abcb15bd747e/js/vapi-background.js:716
    setIcon moz-extension://a2efe7c7-487a-4a71-8253-abcb15bd747e/js/vapi-background.js:846
    AsyncFunctionNext self-hosted:692
Did you try to stream an nttp message? Doens't work. See bug 545365. MimeMessage.jsm:121:13
    onDataAvailable resource:///modules/gloda/MimeMessage.jsm:121
TypeError: aPart is null MimeMessage.jsm:137:7
    stripEncryptedParts resource:///modules/gloda/MimeMessage.jsm:137
    wrapCallback resource:///modules/gloda/MimeMessage.jsm:213
    onStopRequest resource:///modules/gloda/MimeMessage.jsm:95
Did you try to stream an nttp message? Doens't work. See bug 545365. MimeMessage.jsm:121:13
    onDataAvailable resource:///modules/gloda/MimeMessage.jsm:121
TypeError: aPart is null MimeMessage.jsm:137:7
    stripEncryptedParts resource:///modules/gloda/MimeMessage.jsm:137
    wrapCallback resource:///modules/gloda/MimeMessage.jsm:213
    onStopRequest resource:///modules/gloda/MimeMessage.jsm:95

For some messages the body contents does not load at all - see attached screenshot.
Seen with TB91 candidate build 64-bit on Linux. Also happens with TB91 beta6.
I'm not exactly sure when this started, possibly with beta6.
When this happens, going back one message by pressing B, and going forward again by pressing N, the message usually loads properly at the second attempt.

Example:
News server: news.aioe.org
News group: alt.comp.software.thunderbird
Any thread will do.
Bug: Inline images do not show for "Edit as new" from sent mail, also in forward from sent mail
Status: RESOLVED
Priority: --
Resolution: WORKSFORME
Created: 2021-08-08 20:01:20+00:00
Resolved: 2021-08-27 06:05:44+00:00

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Steps to reproduce:

On 91.0b6 - linux
Go to sent mail.
On a mail you have sent that includes inline images, right click "edit as new"


Actual results:

The compose window has frames for the images but no image content


Expected results:

The frames should contain the images.

Also happens on attempting to forward a sent mail.
Bug: Broken link to MDN localization page on Thunderbird.net
Status: RESOLVED
Priority: --
Resolution: MOVED
Created: 2021-08-09 00:47:09+00:00
Resolved: 2024-08-19 01:13:16+00:00

At https://www.thunderbird.net/en-US/get-involved/#translation the translation section has this text
For localization of Thunderbird itself, see [Thunderbird Localization](https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Thunderbird/Thunderbird_Localization) on MDN.

That link is broken because the MDN content is archived - projects are supposed to host their own docs. 

Original error posted here: https://github.com/mdn/content/issues/7658
Bug: phantom window is created when sending (wayland)
Status: RESOLVED
Priority: --
Resolution: INCOMPLETE
Created: 2021-08-09 03:33:34+00:00
Resolved: 2024-03-02 16:28:00+00:00

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

1. set wayland as window manager
2. open thunderbird, create or reply to an email and a second compose window appears
3. click send and compose window vanishes
4 thunderbird appears to still have two windows open but the second cannot be seen
5. repeat to create additional "phantom" windows

I am using Pop!_OS 21.04 (Ubuntu) with Mesa graphics and wayland enabled


Actual results:

from what I can assume, when sending an email the compose window closes, but thunderbird/wayland still believes it to be open. if additional phantom windows are created and thunderbird is closed, the phantom windows stay open and thunderbird can't be started again until restart occurs


Expected results:

once compose window closes, thunderbird should only display and report main window open. If i fall back to x11 the program works as expected.
Bug: SSL certificate expired on thunderbird.net
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-08-09 13:08:43+00:00
Resolved: 2021-08-09 13:57:10+00:00

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.15

Steps to reproduce:

Attempted to access website at https://www.thunderbird.net/


Actual results:

Got an error from Safari stating the certificate expired on Mon 9 August at 13:00 BST


Expected results:

Access to the website though https
Bug: Security certificate is invalid when accessing www.thunderbird.net
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-08-09 13:34:08+00:00
Resolved: 2021-08-09 13:55:26+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

just opened Thunderbird 


Actual results:

Get error message attached.


Expected results:

Nothing.
Bug: Envelope / Mail folder icon below Menu Bar changes to an Adobe icon
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-09 17:20:22+00:00
Resolved: 2021-08-24 18:00:14+00:00

I received an email from Adobe and when I clicked on it, I noticed that the envelope icon that normally appears to the left on the tab which shows what current folder is selected (in my case, Inbox) tuns into an Adobe icon. It stays as an Adobe icon instead of an envelope icon even if I read other emails in my Inbox. The only way to change it back to an envelope icon is to click on another folder.

STR:

I attached the offending email as an .eml file. Hope it repros for you.
Bug: Getting SUBSCRIBE failed on all  office 365 folders other than InBox and Trash
Status: RESOLVED
Priority: --
Resolution: WORKSFORME
Created: 2021-08-10 11:03:02+00:00
Resolved: 2023-06-28 10:30:36+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

Go to my Office365 IMAP e-mail account in Thunderbird and list sub-folders.




Actual results:

Thunderbird stopped showing all folders other than InBox and Trash. When I attempt to subscribe to a folder this error shows up in Activity Manager: "The current command did not succeed. The mail server for account user@example.com responded: SUBSCRIBE failed". 

I deleted the account and resubscribed with the same results. 


Expected results:

I should have seen many, many other subfolders of InBox.

This is an IMAP account connecting to Office365. I have confirmed this is a problem with Thunderbird by installing another IMAP e-mail client (eM Client);  that IMAP client shows me all the subfolders.
Bug: [win32] libotr.dll links to (missing) libgcc_s_sjlj-1.dll
Status: RESOLVED
Priority: P2
Resolution: FIXED
Created: 2021-08-10 12:19:01+00:00
Resolved: 2021-08-16 19:53:21+00:00

Likely a regression from bug 1700240.

An additional DLL (libgcc_s_sjlj-1.dll ) started getting linked in the libotr build, but only win32.

The functions that are used from libgcc_s_sjlj-1.dll are **__udivdi3** and **__umoddi3**. These are functions from libgcc to do 64-bit math on 32-bit architectures. There's several possible fixes, but the easiest appears to be ensuring that libgcc is statically linked with `-static-libgcc`.

There's an xpcshell test that is supposed to detect this kind of failure, yet it passes in Treeherder on win32.

Win64:
```
➜ mingw-ldd libotr.dll
        msvcrt.dll => /usr/lib/wine/x86_64-windows/msvcrt.dll
        advapi32.dll => /usr/lib/wine/x86_64-windows/advapi32.dll
        ws2_32.dll => /usr/lib/wine/x86_64-windows/ws2_32.dll
        libssp-0.dll => libssp-0.dll
```
Win32:
```
➜ mingw-ldd libotr.dll
        msvcrt.dll => /usr/lib32/wine/i386-windows/msvcrt.dll
        advapi32.dll => /usr/lib32/wine/i386-windows/advapi32.dll
        ws2_32.dll => /usr/lib32/wine/i386-windows/ws2_32.dll
        libgcc_s_sjlj-1.dll => **not found**
        libssp-0.dll => libssp-0.dll
`
Bug: Event handlers linger if Exchange credentials dialog is shown twice in one session
Status: RESOLVED
Priority: P2
Resolution: FIXED
Created: 2021-08-10 13:58:18+00:00
Resolved: 2021-08-25 16:42:32+00:00

The code to prompt the user to log in to their Exchange autodiscover server does not uninstall all, or in some cases, any, of its event handlers. This results in outdated event handlers lingering which might interfere with a potential reuse of the dialog in the same session. A typical reason why the dialog would be reused is if the autodiscover server needs the username in domain\user format, in which case the initial login would fail and the user would be prompted to send the new credentials to the autodiscover server.
Bug: Update Thunderbird preferences document title and more references to "Settings"
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-11 09:18:17+00:00
Resolved: 2025-01-16 21:45:08+00:00

+++ This bug was initially created as a clone of Bug #1694511 +++

Not sure if parts of this happened already (we don't have the Settings/Preferences split across OSs anymore). I found at least: https://searchfox.org/mozilla-central/rev/538569c63ffb17d590c51df66f9fff790dd7431e/browser/locales/en-US/browser/preferences/preferences.ftl#122 which should be ported to our corresponding searchResults.inc.xhtml
Bug: Inbox randomly reverts to default view (unthreaded/threaded, depending on TB version) after moving/deleting messages, which may trigger auto compact.
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-11 09:45:59+00:00
Resolved: 2024-08-09 20:51:43+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67

Steps to reproduce:

When messages are shown as threaded, sometimes when you drag a message from the inbox to another folder the threaded view reverts back to being unthreaded.


Actual results:

Inbox view changes from threaded to un-threaded


Expected results:

Inbox folder view should stay as threaded
Bug: composeAction API: “Error: Internal error: Type IconPath not found”
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-11 11:22:38+00:00
Resolved: 2021-09-24 21:36:07+00:00

`browser.composeAction.setIcon()` throws these errors:

```
Error: Internal error: Type IconPath not found Schemas.jsm:1602:13
Uncaught DOMException: An exception was thrown debugger eval code:1:23
```

mozregression returns this result:

```
2021-08-11T03:57:18.112000: INFO : Narrowed nightly regression window from [2021-05-18, 2021-05-21] (3 days) to [2021-05-20, 2021-05-21] (1 days) (~0 steps left)
2021-08-11T03:57:19.163000: DEBUG : Found commit message:
Bug 1712058 - Flip default value for browser_style in cloudFile API from true to false and fix some descriptions and type definitions. r=mkmelin

Differential Revision: https://phabricator.services.mozilla.com/D115600

2021-08-11T03:57:19.163000: INFO : The bisection is done.
```


It would be great if the fix for this regression could be uplifted to TB 91, as it is affecting an add-on I just published to ATN.
Bug: Drag-over text unreadable when picture is dragged over compose window with content (Insert inline | Add as attachment)
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-11 13:13:12+00:00
Resolved: 2021-08-19 07:43:50+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67

Steps to reproduce:

Drag a picture over a compose window to attach. An overlay shows up with "Insert inline" and "Add as attachment". Depending on where you drag it, one part of the overlay is lit up, the other one is illegible if the compose window already has content.


Actual results:

UI unusable.


Expected results:

UI should be usable.

This is a real use case reported by one of our users.
Bug: "Add Mail account" for Microsoft 365 (oauth2), the oauth2 screen that is displayed for SMTP is for Google not Microsoft
Status: RESOLVED
Priority: --
Resolution: WORKSFORME
Created: 2021-08-11 16:20:15+00:00
Resolved: 2021-08-19 17:32:11+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0

Steps to reproduce:

I'm trying to set up mail account in Thunderbird 78.13.0 (64-bit) on Windows 10 for a Microsoft 365 account that has MFA enforced.

The process is handily documented at https://kb.uwm.edu/uwmhd/page.php?id=109671 (though I'm using a different M365 tenant which doesn't use an external identity provider, I'm expecting to see a "sign in with Microsoft" box).


Actual results:

After I did:

Add Mail account
Enter "your name" and "email address" but not "password"
Continue

Thunderbird detects as expected:
Protocol IMAP (remote folders)
Incoming IMAP outlook.offce365.com SSL
Outgoing SMTP smtp.office365.com STARTTLS
Username me@example.com

I click "Done"


Navigate to Account Settings > Server Settings > Security Settings > Authentication Method and select OAuth2 from the Authentication Method dropdown.

Navigate to Outgoing Server on the left-hand panel of the account settings screen.
Select the Office365 (Microsoft) smtp server and click edit on the righthand side
Change the Authentication method to OAuth2  to the following and then click OK:

    Description: Changed from "O365" to "Office365 (Microsoft)"
    Server Name: smtp.office365.com
    Port: 587 (default)
    Connection Security: STARTTLS
    Authentication Method: OAuth2
    User Name: (left at my user name)

OK

As the SMTP entry for smtp.office365.com was added last, it's the default.
As expected it is set as the "outgoing server (SMTP)" for the new account I have just added.

Click on "inbox" in my O365 account
The There's "no sign-in with Microsoft" oauth2 question because I signed in yesterday and it is remembered (screenshot of exactly what it asked for available if necessary).

Oddly the IMAP connection does not fetch all folders, only Inbox and a very old "Trash" folder, but that's not relevant to this problem.

Write
Try and send a message.
Thunderbird says "connecting to smtp.office365.com"
An Oauth2 window appears, but it is a Google one, not a Microsoft one.



Expected results:

I'd have expected to see a "Sign in with Microsoft" Window, enter username and password there, and then be prompted for MFA on an external device where I've set up MS Authenticator
Bug: email auto marked as read
Status: RESOLVED
Priority: --
Resolution: INVALID
Created: 2021-08-11 20:06:36+00:00
Resolved: 2021-08-17 14:51:37+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

Download email to client


Actual results:

ALL emails are now auto marked as read even though I have NOT read them yet. Even if I have  "Automaticly Mark Messages as Read" unchecked it will still mark them as read. I now have no way of knowing what messages have been read as Thunderbird marks ALL messages as read as soon as they are downloded to the client window.


Expected results:

Messages should remain UNMARKED as READ untill I acctually read them and not be marked as read simply because they were downloaded to the email client
Bug: Thunderbird modal dialogs are attached to the main window, making it unusable
Status: RESOLVED
Priority: --
Resolution: INVALID
Created: 2021-08-11 20:13:59+00:00
Resolved: 2021-08-12 22:10:05+00:00

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

File->Save As
or
Edit->Folder Properties
or
Events and Tasks-> Export
or
Events and Tasks->Import
or
Events and Tasks->Publish
or
Tools->Import



Actual results:

Dialogs appear that cannot be moved without moving main TB window


Expected results:

I should be able to move the dialog windows, as it used to be possible to do, and it still works in the Windows implementation (TB 91.0b6).

It's important to be able to see the content of the main window when using these dialogs, even if it means having to move the dialog out of the way a few times.
Bug: No prompts and notifications for new mails in the filter rules. You must open Tb to see new mail
Status: RESOLVED
Priority: --
Resolution: INCOMPLETE
Created: 2021-08-12 02:57:34+00:00
Resolved: 2021-09-04 11:32:36+00:00

User Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Mobile/15E148 Safari/604.1

Steps to reproduce:

1.创建不同的过滤器规则，接收邮件中处于过滤器规则
2.接收一封不在过滤器规则里的邮件


Actual results:

1.新的邮件不会有任何的提示通知，在windows 10的任务栏中也没有提示
2.对于不在过滤器规则里的邮件，有弹出通知，任务栏也有提示未读邮件


Expected results:

1.任何的新邮件，都应该有提示和通知。
Bug: "Send Later" extension menu appears blank
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-08-12 03:14:21+00:00
Resolved: 2021-08-14 11:34:27+00:00

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

Thunderbird 91.0b6 (macOS 11.5.2 64-bit)
Send Later Version 8.9.5 (July 25, 2021)
Send Later issue: https://github.com/Extended-Thunder/send-later/discussions/361

1. Ensure Thunderbird running and Send Later installed
2. ⌘N to spawn a New Message composition window
3. Click Send Later button and see:  [Screen Shot 2021-08-11 at 10 20 25 PM]
5. Move/re-position the New Message window (will cause Send Later pop-up to close)
6. Click Send Later button and see: [Screen Shot 2021-08-11 at 10 20 36 PM]


Actual results:

The Send Later dialogue appears blank if the New Message window has been moved since it was spawned.


Expected results:

Send Later pop-up not blank, ever.

Thanks,
Chris
Bug: Font sizing and menulist padding changed after removal of --in-content-* style.
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-12 04:44:57+00:00
Resolved: 2021-08-16 13:53:59+00:00

The font sizing of smaller labels and the padding of the menulists have been affected by the changes introduced in bug 1699439.
Luckily these changes are not in the 91 branch.
Bug: „New message“ Window looks ugly with 3840 x 2160 resolution and 150% scaling - with hardware acceleration enabled (Intel UHD Graphics Driver)
Status: RESOLVED
Priority: --
Resolution: INVALID
Created: 2021-08-12 12:58:56+00:00
Resolved: 2021-08-17 10:24:11+00:00

User Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Mobile/15E148 Safari/604.1

Steps to reproduce:

Create new e-mail.


Actual results:

Looks ugly with 4k resolution and 150% scaling.
Some fields are overlapping.


Expected results:

Should look normal without overlapping fields.
Bug: folder bold for unread not working properly in 78.13.0
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-08-12 13:00:45+00:00
Resolved: 2021-08-16 09:40:38+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0

Steps to reproduce:

78.13.0 (32-bit)
I'm on the release update channel. I have a 64-bit machine but I seem to only get 32-bit updates. Dell Latitude E7450 Win 10 Pro
When new mail came in the listing used to be in boldface (unread) and stayed that way until I clicked on it. At that point it would revert to normal face. This made it very easy to see new emails and  if I decided I didn't want to read a particular one right away it would stay bold until I clicked on it. 


Actual results:

With this latest update all emails come in in normal face even with the "automatically mark message as read box unchecked.
If I check that box, the only only two options are immediately or after so many seconds.
This is new behavior since the latest update


Expected results:

Message are in bold face until clicked, then they change top normal face.
Thunderbird has always operated this way in the past (I've used it for more than 15 years.)
Bug: Add-on browser_action default_popup menus are blank after first click
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-08-12 16:59:56+00:00
Resolved: 2021-08-19 06:13:39+00:00

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36

Steps to reproduce:

Install add-on that implements a toolbar button with popup menu via default_popup and click the toolbar button.


Actual results:

Menu window opens but is all white with no menu content is visible.


Expected results:

A menu window should display with the menu content visible.
Bug: Attachment area not fully removed when removing GPG key
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-08-12 17:21:54+00:00
Resolved: 2021-08-24 18:00:18+00:00

Steps to reproduce:
- Have an account where signing and attachment of the key is enabled by default
- Compose a new message
- Disable signing of the message (which also disables the key being attached)

Actual result:
The attachment pane is still shown, with a label of "1 Attachment (0 bytes)" and no content.

Expected result:
The attachment pane disappears.

This is with Thunderbird 91.0b6
Bug: Folder pane toolbar disappears after restart
Status: VERIFIED
Priority: --
Resolution: FIXED
Created: 2021-08-12 18:42:05+00:00
Resolved: 2021-08-25 15:21:45+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67

Steps to reproduce:

The folder pane toolbar behaves erratically. It disappears on many occasions after restart when it shouldn't. One way to reliably show the problem is this:
Hide the toolbar from the toolbar menu. Toolbar gone.
Display it again via "View > Toolbars". Toolbar there.
Restart.


Actual results:

Toolbar gone.


Expected results:

State of folder pane toolbar should be persisted.

There are other occasions on which the toolbar disappears, but they are not reproducible at will.

Found be a real user of the product in the first 24h after installation.