Bug 407652 - Maximizing a window by dragging turns mouse cursor into a black square
Summary: Maximizing a window by dragging turns mouse cursor into a black square
Status: RESOLVED WORKSFORME
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (show other bugs)
Version: 5.19.90
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-05-17 16:25 UTC by Matej Mrenica
Modified: 2021-02-19 15:03 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Video of the bug in action. Recorded with a camera. (3.85 MB, video/x-matroska)
2020-08-02 07:26 UTC, HM 		Details
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Description Matej Mrenica 2019-05-17 16:25:45 UTC 
STEPS TO REPRODUCE
1. Grab a window like Dolphin or Konsole and maximize it by "throwing" it to the upper screen edge.

OBSERVED RESULT
Until mouse cursor leaves the titlebar it turns into a black square

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.15.90
KDE Frameworks Version: 5.58
Qt Version: 5.13.0 beta3
Kwin Version: master (today - 17.05.2019)
Kwayland Version: master (today - 17.05.2019)

ADDITIONAL INFORMATION
On wayland, might be caused by mixing diferent versions of software?
Comment 1 HM 2020-08-02 07:24:44 UTC 
Bug is still present. This is only present while using wayland. This bug must have been mistakenly marked resolved as this is not present while using an X session.

I've found that this issue also appears when dragging the window to a screen edge with a panel as well.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.72.0
Qt Version: 5.15.0
Kernel Version: 5.7.11-arch1-1
OS Type: 64-bit
Processors: 12 × AMD Ryzen 5 2600 Six-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: Radeon RX Vega 56
Comment 2 HM 2020-08-02 07:26:07 UTC 
Created attachment 130567 [details]
Video of the bug in action. Recorded with a camera.
Comment 3 David Edmundson 2020-09-17 22:37:44 UTC 
Thanks for the video. 

As a somewhat unhelpful comment I am unable to reproduce this.

Matej, you changed the version, I assume that means you reproduced it on 5.19.90?
Comment 4 Matej Mrenica 2021-01-26 11:40:04 UTC 
@HM do you still have this issue?
Comment 5 Matej Mrenica 2021-02-16 18:16:31 UTC 
I have not seen this issue in a while now, if someone has it we can reopen.
Comment 6 HM 2021-02-19 15:03:25 UTC 
(In reply to Matej Mrenica from comment #4)
> @HM do you still have this issue?

I tried to reproduce this now(recently) and was unable to do so in both my Arch setup and a KDE Neon VM. Looks like its gone.