Bug 507209

Summary: Auto hide panels won't change opacity even though they are set to adaptive.
Product: [Plasma] plasmashell Reporter: Zsolt <vari4bled>
Component: PanelAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED FIXED    
Severity: minor CC: kdedev, nate, niccolo.venerandi, niccolo
Priority: NOR    
Version First Reported In: 6.4.2   
Target Milestone: 1.0   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: https://invent.kde.org/plasma/plasma-desktop/-/commit/fb800eb5240194cedb6de2eac5a06252686aa567 Version Fixed/Implemented In: 6.5.0
Sentry Crash Report:
Attachments: Screenshot

Description Zsolt 2025-07-18 20:50:35 UTC 
SUMMARY


STEPS TO REPRODUCE
1. Set panel to auto-hide and set opacity to adaptive.
2. Open a window that is behind this panel

OBSERVED RESULT

Panel remains translucent

EXPECTED RESULT

Panel should become opaque
SOFTWARE/OS VERSIONS
Windows: 

KDE Plasma Version:  6.4.2
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1

ADDITIONAL INFORMATION

Probably adaptive setting is tied to "touching windows" and an auto-hide panel cannot technically touch a panel, but it would drastically improve legibility for people such as me who love transparency, so use the shell with disabled background contrast option, but would like the opaque setting, when windows are behind the panel.
Comment 1 Zsolt 2025-07-18 20:54:06 UTC 
Created attachment 183328 [details]
Screenshot
Comment 2 TraceyC 2025-07-23 20:29:25 UTC 
I verify this behavior on git-master.

What I observed is that the panel is still transparent both when
- When a window is maximized
- When a window is behind it but not maximized
Comment 4 Niccolò Venerandi 2025-08-26 08:14:20 UTC 
Git commit fb800eb5240194cedb6de2eac5a06252686aa567 by Niccolò Venerandi.
Committed on 26/08/2025 at 08:14.
Pushed by niccolove into branch 'master'.

Make adaptive transparency work for non-normal panels

Previously, there was an exception that made all non-normal panels
ignore adaptive transparency. This was implemented because the same
variable was used by float/defloat behavior, and non-normal panels
should never de-float. This commit separates the two behaviors, so
that non-normal panels do implement adaptive transparency.

M  +14   -6    desktoppackage/contents/views/Panel.qml

https://invent.kde.org/plasma/plasma-desktop/-/commit/fb800eb5240194cedb6de2eac5a06252686aa567