1736249 - Display issue with message compose window under windows 11 - thick grey/gray border around addressing area

Status: RESOLVED INVALID

(Thunderbird :: Message Compose Window, defect)

Description

[Camille]

Attachment: Write email TB94.0.b3.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:93.0) Gecko/20100101 Firefox/93.0

Steps to reproduce:

There is a display issue in the message compose window. I am running TB94.0b3 under Windows 11, screen size is 2496x1664 and ratio for text is 150%.
If I change the ratio to 100% the screen gets refreshed and the issue disappears. If I put back the ratio to 150% the issue also disappears. It is only when the window is created that the issue happens, independent of the text ratio value defined in the windows settings.
If I resize the window, the issue remains.

Actual results:

The background of the top section of the message compose window (from, to, subject fields) is incorrectly displayed (see attached screenshot).

Expected results:

There should be no such issue with the display of the top part of the window.

Comment 1

[Magnus Melin [:mkmelin]]

Did you try Help | Troubleshoot mode?

Comment 2

[Richard Marti (:Paenglab)]

Try to disable HW acceleration in Prefs > General on bottom.

Comment 3

[Camille]

Magnus, I launched TB in Troubleshoot mode and indeed the issue disappears. What does this mean ?
Richard, I disabled HW acceleration and this also solves the issue.
Do you want me to move ahead with other tests or should we close this one ?

Comment 4

[Magnus Melin [:mkmelin]]

Troubleshoot also disabled hardware acceleration, IIRC.

I think there's not much we can do then. Hitting some bug in the graphics driver.

Comment 6

[jb.github]

Thanks for the workaround. How can this be avoided to impact unsuspecting users? If hardware acceleration results in such display problems it should be disabled by default and a warning given when enabling to unset it again if display errors occur?

Comment 7

[Wayne Mery (:wsmwk)]

There is no UI available to provide a warning, and the graphics architecture related to HWA is being phased out, so I doubt further resources will be given to resolving this issue with a warning.

The best that can be hoped is identify the specific model of graphics hardware and specific version of graphics driver - and assuming there is no newer version - ask that it be blacklisted for acceleration.