Bug 404496

Summary: Remnants of Hidden/Minimized Application Windows at Desktop Corners when "Showing Desktop" from Present-Windows Effect
Product: [Plasma] kwin Reporter: carbonchauvinist
Component: effects-present-windowsAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal    
Priority: NOR    
Version First Reported In: 5.15.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: X11 session example
Wayland session example

Description carbonchauvinist 2019-02-17 21:45:49 UTC
Created attachment 118164 [details]
X11 session example

SUMMARY
I've enabled the "Show desktop" action for the "Left button" under the "Desktop" section of the Present Windows settings. However, when using this option ghosts of the minimized application windows remain in the corners of my desktop. Happens in X11 and Wayland sessions. 

STEPS TO REPRODUCE
1. Enabled "Show desktop" action for the "Left button" under the "Desktop" section of the Present Windows settings dialog.
2. Open multiple windows, e.g. >=3.
3. Engage the present windows effect, left-click on desktop

OBSERVED RESULT
All windows minimize/disappear and I'm shown my desktop as expected. However, at corners of monitor there are remnants/ghosts of application windows.

EXPECTED RESULT
All windows minimize/disappear and I'm shown desktop without ghost images in corners.

SOFTWARE/OS VERSIONS
Windows: 
MacOS: 
Linux/KDE Plasma: Linux 4.20.8-arch1-1-ARCH x86_64 GNU/Linux
(available in About System)
KDE Plasma Version: 5.15.0-1
KDE Frameworks Version: 
Qt Version: 5.12.1-2

ADDITIONAL INFORMATION
Comment 1 carbonchauvinist 2019-02-17 21:46:36 UTC
Created attachment 118165 [details]
Wayland session example
Comment 2 Vlad Zahorodnii 2019-02-17 22:18:19 UTC
This is kinda as intended.

*** This bug has been marked as a duplicate of bug 347281 ***