https://bugs.kde.org/show_bug.cgi?id=450669
Bug ID: 450669
Summary: KWin's Window Open/Close Animation (brief flashing
light when fading in/out with blur)
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: m...@ratijas.tk
Target Milestone: ---
SUMMARY
Some KWin effects badly interact with each other, I'd say incompatible for some
scenarios. Especially Window Open/Close Animation don't play nicely with blurry
background, and semi-transparency while Alt (or Meta) + dragging windows around
with a mouse.
Video showcases some of these glitches: https://youtu.be/pGp53kkyXrY
STEPS TO REPRODUCE
1. Enable effects like in my video.
2. Open System Tray popup (full representation dialog).
3. Hold Alt (or Meta?) and press on it, then release
OBSERVED RESULT
Popup turns semi-transparent, rapidly loosing its blurriness. On release it
flashes with lighter-than-it-should-be background while regaining blurry
background with an animation. Same glitch can be observed on tooltips.
EXPECTED RESULT
Popups should animate smoothly between transparency levels and blurriness, no
matter target values are or which effects are enabled.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.24.80
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.2
Kernel Version: 5.16.10-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 970M/PCIe/SSE2
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