Bug 431669

Summary: During cross-fade animation, an opaque window may become translucent
Product: [Plasma] kwin Reporter: Mojahed Yavazi <mojahedai7>
Component: scene-openglAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal CC: bugseforuns, kde
Priority: NOR    
Version: git master   
Target Milestone: ---   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: window flash
maximize flash other apps

Description Mojahed Yavazi 2021-01-16 06:01:52 UTC 
SUMMARY
When I maximize or unmazimize a window in wayland session. The window flashes.

STEPS TO REPRODUCE
1. open a window
2. maximize or unmazimize window

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.20.80
KDE Frameworks Version: 5.79.0
Qt Version: 5.15.2
Kernel Version: 5.9.16-1
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-6500 CPU @ 3.20GHz
Memory: 15.5 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 530
Comment 1 Mojahed Yavazi 2021-01-16 06:09:02 UTC 
Created attachment 134916 [details]
window flash

window flash when maximize
Comment 2 Vlad Zahorodnii 2021-01-18 09:30:12 UTC 
Can you reproduce this bug with other applications? Also, can you reduce the animation speed in system settings please?
Comment 3 Mojahed Yavazi 2021-01-19 05:00:33 UTC 
Created attachment 134987 [details]
maximize flash other apps

Window flash and show background for a second when maximize.
Comment 4 Vlad Zahorodnii 2021-01-19 08:51:10 UTC 
Ah, I see. The cross-fade animations leaks the background because it's not implemented properly.
Comment 5 Patrick Silva 2021-05-31 14:24:49 UTC 
I noticed this bug on neon unstable yesterday.
Comment 6 David Edmundson 2022-06-16 10:27:53 UTC 
This is no longer an issue as described as we have no cross fade animations.