Bug 465863

Summary: (wayland)white line appears at the top of the panel when using breeze dark and scaling with 1.5x
Product: [Plasma] plasmashell Reporter: ston.jia
Component: PanelAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: normal CC: nate, niccolo.venerandi
Priority: NOR    
Version: 5.27.0   
Target Milestone: 1.0   
Platform: Gentoo Packages   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: White line immediately above the panel
app launcher
notification window

Description ston.jia 2023-02-16 19:01:04 UTC
Created attachment 156318 [details]
White line immediately above the panel

SUMMARY
The panel with the breeze dark application theme works fine when scaled at 1x or 2x or less than 1x, however, when scaled at 1.5x, a white line appears at the top of the panel (which can be very annoying if your panel is at the bottom of the screen).

STEPS TO REPRODUCE
1. In the monitor configuration, set the scale of the monitor to 1.5
2. Create a panel at the bottom of the screen (so that the top half of the panel can be seen)

OBSERVED RESULT
a white line appears at the top of the panel

EXPECTED RESULT
There should not be a white line at the top of the panel, the whole panel should be black

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: gentoo linux 2.13
(available in About System)
KDE Plasma Version: 5.27.0
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
Comment 1 ston.jia 2023-02-16 19:25:03 UTC
This problem only occurs with 1.5 scaling, 1.45x and 1.55x both appear without white lines
Comment 2 ston.jia 2023-02-16 21:45:04 UTC
Created attachment 156326 [details]
app launcher
Comment 3 ston.jia 2023-02-16 21:45:32 UTC
Created attachment 156327 [details]
notification window
Comment 4 ston.jia 2023-02-16 21:46:05 UTC
It appears not only at the top of the panel, but also on the left side of the notification bar window and at the top of the app launcher
Comment 5 Nate Graham 2023-02-17 22:52:25 UTC

*** This bug has been marked as a duplicate of bug 464526 ***