1742439 - input (edit) window refresh problem after minimizing and the again maximizing this window

Status: UNCONFIRMED

(Thunderbird :: Message Compose Window, defect)

Description

[w.kuch]

Attachment: Thunderbird Window refresh problem.pdf

Steps to reproduce:

First of all, sorry for my bad English, I'm from Germany.
I'm using Win 10 Pro / 21H1 .
The problem happens after my Thunderbird-Portable was updated from version
78.14.0 (64 bit) to version 91.3.2 . The same problem ist true when using the test
version of Thunderbird-Portable 93.0 Beta_1 .
This problem never happens when using version 78.14.0 portable .

• write an email
• minimize the edit window to the windows taskbar
• maximize the edit window from the windows taskbar

Actual results:

A part of the text and sometimes also a part of the menu bar was not
fully be shown. Meaning a part is missing, the window refresh was not
completely be done.
When clicking with the mouse into this missing part(s) then suddenly
it was correctly (fully) be shown.
This problem does not happen, when using the same Thunderbird-Portable
programs together with Win 10-PE as operating system (via VirtualBox 6.1)

Expected results:

The edit window must completely be shown.
The window refresh must completely be done after maximizing the edit window
from the windows taskbar .

Comment 1

[Richard Marti (:Paenglab)]

Can you try to disable the hardware accelerations in Preferences > General on bottom? Restart TB after the change.

Comment 2

[w.kuch]

Sorry for the late reply !
Thanks for your idea.
The problem is solved when disabling the hardware acceleration.(In reply to Richard Marti (:Paenglab) from comment #1)

Can you try to disable the hardware accelerations in Preferences > General on bottom? Restart TB after the change.

Comment 3

[zoimartin]

Attachment: link not working on Mozilla.pdf

Comment 4

[zoimartin]

Attachment: link not working on Mozilla.pdf

Comment 5

[zoimartin]

Attachment: Main.txt