[kwin] [Bug 524016] New: Text transitions/animations in Libadwaita/GTK apps creates a line of pixels behind them.

https://bugs.kde.org/show_bug.cgi?id=524016

            Bug ID: 524016
           Summary: Text transitions/animations in Libadwaita/GTK apps
                    creates a line of pixels behind them.
    Classification: Plasma
           Product: kwin
      Version First 6.7.3
       Reported In:
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: wayland-generic
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

Created attachment 194973
  --> https://bugs.kde.org/attachment.cgi?id=194973&action=edit
screenshot of the issue

DESCRIPTION
Text transitions/animations in Libadwaita/GTK apps creates a line of pixels
behind them, this is especially noticeable using the app Bazaar, where when you
open an app's page and scroll down the title of the app appears on top, and
then when you scroll up it disappears, and that animation/transition creates a
line of pixels after the text, and this issue doesn't happen on GNOME but only
on KDE on my testing, I'm also using a NVIDIA GPU on Fedora 44 KDE Wayland with
driver 610.57.04.

I've firstly posted this issue on the GTK gitlab
https://gitlab.gnome.org/GNOME/gtk/-/work_items/8256, but since this issue
isn't happening on GNOME anymore, not it's KDE specific

STEPS TO REPRODUCE
1. Open Bazaar and open an app's page
2. scroll down until the name of the app appears on the top, and then scroll up
again until the name disappears
3. 

OBSERVED RESULT
The text animation/transition creates a line of pixels after it

EXPECTED RESULT
There should be no line of pixels created after the text moving

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 44
KDE Plasma Version: 6.7.4
KDE Frameworks Version: 6.28.0
Qt Version: 6.11.1
Kernel Version: 7.1.7-200.fc44.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 28 × Intel® Core™ i7-14700KF
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 4060

ADDITIONAL INFORMATION

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