[Xposed General] Sapphire999:
You're welcome :) I would likely do it, but don't know how to make it appear in device's logcat. Any guide? Unfortunally, on stock, even rooted rom linux is unable to get adb access during boot, cauze it's only possible when device is fully booted up and touchwiz unlocked, as device asks permission for getting adb access(have to confirm it every time). USB debugging is allowed. So I'm able only to get logcat when device is booted up already. The best I could I provided information, screenshots. I'm used to work with Linux for about 15 year and program software for it, but Android is much different from it.

Will it help, if I place 16MB error log buffer? Mean, will adb provide all data after device booted up and later connected to linux?

Hmm... Allowed adb permanently to my laptop. Seems like this time I got an early boot logs too. But device after full boot-up disconnected itself. Not sure, if it will gize something usefull to you. Anyway, here is my log(with Xposed 80.1 on board and device does always optimize something on booth, guess it's sdcard's apps). I tried my best to help.

Wanam, look at about 99% of the file's length. It's talking a lot there about that package shown on screenshot. Screenshot also attached. I don't understand, what that location he talkes about means

04-11 11:26:31.110 E/WifiStateMachine( 3950): Blacklist file delete
04-11 11:26:31.110 D/HS20StateMachine( 3950): Broadcast Received: android.intent.action.BOOT_COMPLETED
04-11 11:26:31.110 D/HS20StateMachine( 3950): CMD_BOOT_COMPLETED
04-11 11:26:31.130 E/asset ( 3950): Creating SharedZip 0x8053a630 /mnt/asec/com.css.selfhealing-1/base.apk
04-11 11:26:31.130 E/asset ( 3950): !@+++ opening zip '/mnt/asec/com.css.selfhealing-1/base.apk' by system_server(PackageManager)
04-11 11:26:31.135 I/WifiHs20Service( 3950): Broadcast received:android.intent.action.BOOT_COMPLETED
04-11 11:26:31.135 I/WifiHs20Service( 3950): Message received 5003
04-11 11:26:31.155 I/EthernetServiceImpl( 3950): receive Boot completed
04-11 11:26:31.155 D/SettingsProvider( 3950): isChangeAllowed() SettingsProvider : name = eth_device_conn
04-11 11:26:31.155 I/EthernetServiceImpl( 3950): ETH_DEVICE_CONNECTED is : 1
04-11 11:26:31.165 D/Tethering( 3950): Boot complete.
04-11 11:26:31.185 D/UsbHostNotification( 3950): boot completed
04-11 11:26:31.190 E/asset ( 3950): !@+++ closed '/mnt/asec/com.css.selfhealing-1/base.apk' by system_server(PackageManager)
04-11 11:26:31.190 D/PackageManager( 3950): Resolved nativeLibraryRoot for com.css.selfhealing to root=/mnt/asec/com.css.selfhealing-1/lib, libraryDir=/mnt/asec/com.css.selfhealing-1/lib/arm, isa=true
04-11 11:26:31.190 E/UsbHostManager( 3950): dealWithDevicesOnBootComplete :: deviceName = /dev/bus/usb/001/003
04-11 11:26:31.195 W/UsbSettingsManager( 3950): no meta-data for ResolveInfo{9747474 com.estrongs.android.pop/.view.FileExplorerActivity m=0x108000}
04-11 11:26:31.200 W/SELinux ( 2944): Function: selinux_compare_spd_ram, index[1], priority [2], priority version is VE=SEPF_SECMOBILE_6.0.1_0010
04-11 11:26:31.200 I/PackageManager( 3950): SELinux relabeling of com.css.selfhealing from sdcard issued.
04-11 11:26:31.200 W/SELinux ( 2944): Function: selinux_compare_spd_ram, index[3], priority [2], priority version is VE=SEPF_SECMOBILE_6.0.1_0010
04-11 11:26:31.205 D/UsbSettingsManager( 3950): deviceAttached: /dev/bus/usb/001/003 def package null
04-11 11:26:31.205 D/UsbSettingsManager( 3950): deviceAttached, send intent Intent { act=android.hardware.usb.action.USB_DEVICE_ATTACHED flg=0x10000000 (has extras) }
04-11 11:26:31.205 W/ContextImpl( 3950): Calling a method in the system process without a qualified user: android.app.ContextImpl.sendBroadcast:830 com.android.server.usb.UsbSettingsManager.deviceAttached:817 com.android.server.usb.UsbHostManager.dealWithDevicesOnBootComplete:429 com.android.server.usb.UsbHostManager.access$100:61 com.android.server.usb.UsbHostManager$2.onReceive:417
04-11 11:26:31.205 D/UsbSettingsManager( 3950): deviceAttached, call to resolveActivity started, Intent { act=android.hardware.usb.action.USB_DEVICE_ATTACHED flg=0x10000000 (has extras) }
04-11 11:26:31.205 D/UsbSettingsManager( 3950): resolveActivity : matches count = 0, defaultPackage = null
04-11 11:26:31.205 D/UsbSettingsManager( 3950): deviceAttached, call to resolveActivity ended, Intent { act=android.hardware.usb.action.USB_DEVICE_ATTACHED flg=0x10000000 (has extras) }
04-11 11:26:31.205 D/UsbHostManager( 3950): displayNotification : [02h,02h,01h]
04-11 11:26:31.205 D/UsbHostManager( 3950): displayNotification : [0ah,00h,00h]
04-11 11:26:31.205 D/UsbHostManager( 3950): displayNotification : [02h,0dh,00h]
04-11 11:26:31.205 D/UsbHostManager( 3950): displayNotification : [0ah,00h,01h]
04-11 11:26:31.205 D/UsbHostManager( 3950): displayNotification : [0ah,00h,01h]
04-11 11:26:31.220 E/Zygote ( 7229): v2
04-11 11:26:31.220 I/libpersona( 7229): KNOX_SDCARD checking this for 10163
04-11 11:26:31.220 I/libpersona( 7229): KNOX_SDCARD not a persona
04-11 11:26:31.220 I/ActivityManager( 3950): Start proc 7229:com.samsung.android.sdk.professionalaudio.utility.jammonitor/u0a163 for broadcast-2 com.samsung.android.sdk.professionalaudio.utility.jammonitor/.BPReceiver
04-11 11:26:31.220 W/SELinux ( 7229): Function: selinux_compare_spd_ram, index[1], priority [2], priority version is VE=SEPF_SECMOBILE_6.0.1_0010
04-11 11:26:31.225 E/Zygote ( 7229): accessInfo : 0
04-11 11:26:31.225 W/SELinux ( 7229): SELinux: seapp_context_lookup: seinfo=platform, level=s0:c512,c768, pkgname=com.samsung.android.sdk.professionalaudio.utility.jammonitor
04-11 11:26:31.230 D/UsbHostRestrictor( 3950): mBootCompletedReceiver onReceive
04-11 11:26:31.230 D/UsbHostRestrictor( 3950): initSetUsbBlock STARTED
04-11 11:26:31.230 D/UsbHostRestrictor( 3950): SIM was already inserted
04-11 11:26:31.230 D/UsbHostRestrictor( 3950): UPS Mode is OFF
04-11 11:26:31.230 D/UsbHostRestrictor( 3950): writableHostSysNode[true]
04-11 11:26:31.230 D/UsbHostRestrictor( 3950): Write Disable Sys Node with [OFF]
04-11 11:26:31.230 D/UsbHostRestrictor( 3950): NOT DISABLE USB 5
04-11 11:26:31.235 W/SELinux ( 2944): SELinux: Loaded file_contexts contexts from /file_contexts.
04-11 11:26:31.235 W/SELinux ( 2944): SELINUX: pkgdir_selabel_lookup, reloading seapp_contexts only once, pathname:/data/data/com.css.selfhealing, uid:10325
04-11 11:26:31.235 W/SELinux ( 2944):
04-11 11:26:31.235 W/SELinux ( 2944): Function: selinux_compare_spd_ram, index[1], priority [2], priority version is VE=SEPF_SECMOBILE_6.0.1_0010
04-11 11:26:31.235 W/SELinux ( 2944): SELinux: seapp_context_lookup: seinfo=default, level=s0:c512,c768, pkgname=com.css.selfhealing
04-11 11:26:31.240 W/KiesUsbObserver( 3950): isbootcomplete = true
04-11 11:26:31.240 W/KiesUsbObserver( 3950): isbootcomplete = trueisTwiceResetfalse
04-11 11:26:31.240 W/KiesUsbObserver( 3950): sendMsg ->usbState is9000UsbMode is 2000
04-11 11:26:31.240 W/KiesUsbManager( 3950): isTwiceResetfalseisbootcompletetrue
04-11 11:26:31.240 W/SELinux ( 2944): SELINUX: pkgdir_selabel_lookup, reloading seapp_contexts only once, pathname:/data/data/com.css.selfhealing/files, uid:10325
04-1

What a zip is it creating? I don't understand, what system does to that app and package. Just pasted a logcat part into CODE tag, so that it would be easier to find for you. Hopefully it helps some. Anyway MM does some weird things on boot and always optimizes something on boot.(dalvik and cache were not wiped before boot)

And also before it:

04-11 11:26:31.095 D/Vold ( 2892): ASEC com.css.selfhealing-1 mounted
04-11 11:26:31.095 D/VoldConnector( 3950): RCV <- {200 13 asec operation succeeded}
04-11 11:26:31.095 D/VoldConnector( 3950): SND -> {14 asec fspath com.css.selfhealing-1}
04-11 11:26:31.095 D/VoldCmdListener( 2892): asec fspath com.css.selfhealing-1

Ahh, and also this! 2 packages deleted long ago reinstall somehow. It dirrectly tells, that it is installing apps(that were deleted on LP release before moving to MM):

04-11 11:26:07.740 I/BackupManagerService( 3950): Package com.css.selfhealing not installed; dropping from full backup
04-11 11:26:07.740 I/BackupManagerService( 3950): Package ee.post.android not installed; dropping from full backup

And for now, it loaded that app normally, but showes, that it's location is on EXTERNAL storage(microsd).