Bug 425167 - The panel does a double take on reveal
Summary: The panel does a double take on reveal
Status: RESOLVED DUPLICATE of bug 397175
Alias: None
Product: plasmashell
Classification: Plasma
Component: Panel (show other bugs)
Version: 5.19.5
Platform: Neon Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords: triaged
Depends on:
Blocks:
 
Reported: 2020-08-09 17:43 UTC by Andrei Rybak
Modified: 2021-06-07 19:28 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
Demonstration of panel double take. (1.30 MB, video/mp4)
2020-08-09 17:43 UTC, Andrei Rybak 		Details
Second demonstration of panel double take. (59.38 KB, video/mp4)
2020-08-10 18:07 UTC, Andrei Rybak 		Details
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Description Andrei Rybak 2020-08-09 17:43:28 UTC 
Created attachment 130738 [details]
Demonstration of panel double take.

SUMMARY
Hidden panel does a double take when revealed by moving the mouse cursor to the edge of the screen.

STEPS TO REPRODUCE
1. Move mouse to the edge of the screen, where the panel is located.
2. Wait for panel to reveal itself.
3. Observe the panel.

OBSERVED RESULT
Panel moves twice.

EXPECTED RESULT
Panel moves once.

ADDITIONAL INFORMATION
It appears, that the behavior depends on the absence of getting focus on an element of the reveal button (compare different attempts to reproduce in the video).

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.19
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.72.0
Qt Version: 5.14.2
Kernel Version: 5.3.0-51-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
Comment 1 Nate Graham 2020-08-10 16:40:14 UTC 
Cannot reproduce.
Comment 2 Andrei Rybak 2020-08-10 18:07:10 UTC 
Created attachment 130764 [details]
Second demonstration of panel double take.

I found steps to reproduce, which work 100% of the time in my setup.

1. Vertical panel on the left.
2. The cursor should be moved over the empty space on the "Icons-only Task Manager" panel, under the icons of open applications (if any).
3. The cursor should be moved to the leftmost pixel of the screen.

I have also noticed, that the mouse cursor _moves on its own_ one pixel to the right, when the panel is reveal the second time.
Comment 3 Andrei Rybak 2020-09-13 16:30:01 UTC 
Still present in 5.19.5

Operating System: KDE neon 5.19
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0
Kernel Version: 5.3.0-51-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
Comment 4 Andrei Rybak 2021-01-22 08:47:23 UTC 
Still reproducible in:

Operating System: KDE neon 5.20
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-58-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620

Note, that you have to keep pushing the mouse to the left to see the bug.
Comment 5 Patrick Silva 2021-06-07 19:28:35 UTC 
possibly

*** This bug has been marked as a duplicate of bug 397175 ***