Bug 439691 - Translucent panels of the shell have an unexpected outline
Summary: Translucent panels of the shell have an unexpected outline
Status: RESOLVED FIXED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Panel (show other bugs)
Version: 5.22.3
Platform: Other Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-07-09 17:53 UTC by Andrei Rybak
Modified: 2021-07-23 20:37 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
Step 4 (162.24 KB, image/png)
2021-07-09 17:53 UTC, Andrei Rybak 		Details
Step 6 (238.19 KB, image/png)
2021-07-09 17:54 UTC, Andrei Rybak 		Details
Step 8 (263.83 KB, image/png)
2021-07-09 17:54 UTC, Andrei Rybak 		Details
Step 10 (126.22 KB, image/png)
2021-07-09 17:57 UTC, Andrei Rybak 		Details
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Description Andrei Rybak 2021-07-09 17:53:59 UTC 
Created attachment 139971 [details]
Step 4

SUMMARY
Some panels related to the main Panel have a weird outline/edge/border in some cases

STEPS TO REPRODUCE
1. Set the main panel to be vertical on the left edge of the monitor
2. Set the main panel to auto-hide
3. Move the cursor to the left edge of the monitor to reveal the panel
4. Observe the panel's edge (first screenshot)
5. Right click the panel > "Edit Panel..."
6. Observe the edges of the GUI elements that have just appeared (second screenshot)
7. Open Application Launcher
8. Observe the edges of the Application Launcher menu (third screenshot)
9. Maximize any window
10. Repeat the steps 3-8. (fourth screenshot)

OBSERVED RESULT
In steps 4, 6, and 8 there is a weird outline/edge/border on the panels (circled on the screenshots).
In step 10, there is no such outline/edge/border.

EXPECTED RESULT
There is no such outline in steps 4, 6, 8.

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.22
KDE Plasma Version: 5.22.3
KDE Frameworks Version: 5.83.0
Qt Version: 5.15.3
Kernel Version: 5.8.0-59-generic (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
Comment 1 Andrei Rybak 2021-07-09 17:54:24 UTC 
Created attachment 139972 [details]
Step 6
Comment 2 Andrei Rybak 2021-07-09 17:54:33 UTC 
Created attachment 139973 [details]
Step 8
Comment 3 Andrei Rybak 2021-07-09 17:57:04 UTC 
Created attachment 139974 [details]
Step 10
Comment 4 Andrei Rybak 2021-07-12 07:24:20 UTC 
After some experimentation, it seems to be related to "Edit Panel > More Options > Opacity".

- The steps to reproduce described above have a prerequisite -- use the "Adaptive" value for this setting.
- With "Opaque", the issue goes away.
- With "Translucent", the issue is present regardless of full screen windows.
Comment 5 Andrei Rybak 2021-07-12 07:25:38 UTC 
I have changed the title of the bug to reflect the recent findings.
Comment 6 Andrei Rybak 2021-07-23 20:37:45 UTC 
Did some updates and a reboot. Cannot reproduce on:

Operating System: KDE neon 5.22
KDE Plasma Version: 5.22.3
KDE Frameworks Version: 5.84.0
Qt Version: 5.15.3
Kernel Version: 5.8.0-63-generic (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620