[kde] [Bug 445118] New: strange flicker in the titlebar under special conditions

[elypter]

https://bugs.kde.org/show_bug.cgi?id=445118

            Bug ID: 445118
           Summary: strange flicker in the titlebar under special
                    conditions
           Product: kde
           Version: unspecified
          Platform: Other
                OS: Other
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: elypter at yahoo.de
  Target Milestone: ---

SUMMARY

when positioning windows in a certain way parts of the titlebar are flickering

STEPS TO REPRODUCE
1. open 2 windows of librefox(i assume firefox works as well)
2. in one of them open an animated gif (eg:
https://www.redditstatic.com/gold/awards/icon/Illuminati_48.png)
3. open a third application and place it so that the titlebar is over the
position where the animated gif is displayed in the browser window.
4. layer the windows in the following order from bottom to top. librefox with
gif, random librefox page, thrid application

OBSERVED RESULT

the flicker appears to be timed randomly

EXPECTED RESULT

no flicker

SOFTWARE/OS VERSIONS
Operating System: EndeavourOS
KDE Plasma Version: 5.23.2
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.16-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 5500U with Radeon Graphics
Memory: 7.1 GiB of RAM
Graphics Processor: AMD RENOIR

ADDITIONAL INFORMATION
for window decorations i use material

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