[kde] [Bug 456585] New: Can't add Thunderbird theme in Wayland session (final pop-up window)

[Edward Viesel]

https://bugs.kde.org/show_bug.cgi?id=456585

            Bug ID: 456585
           Summary: Can't add Thunderbird theme in Wayland session (final
                    pop-up window)
           Product: kde
           Version: unspecified
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: Edward.Viesel at bornepost.eu
  Target Milestone: ---

SUMMARY
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STEPS TO REPRODUCE
1. Log in with a Wayland session in Kubuntu 22.04
2. Open Thunderbird 91.9.1
3. Go to Extras > Add-ons and Themes > Themes >  [Symbol of cogwheel] > Install
add-on from file (I hope this is the English equivalent to the German I'm
using). 
4. Choose a theme's XPI file from your file manager and get ready to add the
theme with the pop-up window "add".

OBSERVED RESULT
The pop-up window is partially outside the right margin of the laptop screen.
You can just see the left 10 per cent or so. By making the main Thunderbird
window smaller and pulling the pop-up to the left, you can gain access to the
whole pop-up window. But you can't click on the button "Add", because the
cursor turns into a horizontal two-pointed arrow. Any attempt to click on
anything (e.g."Cancel") in the pop-up window does not work. Pressing the ENTER
key on the keyboard does not work either. There is no way of getting the
Thunderbird theme installed with this pop-up window.

EXPECTED RESULT
You should be able to 1) see the pop-up window in its entirety straight away;
2) be able to click on the button "add"; and 3) press the ENTER or ESC key;
then the Thunderbird theme should be installed from a file on the computer's
drive, or installation should be cancelled.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 22.04
(available in About System)
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION
Workaround: Log out from Wayland session and log back on with X11 session. Then
install the theme. The pop-up windows is in its normal position, and you can
click on "Add", thereby adding the theme.

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