Created attachment 156372 [details] Notification popup SUMMARY The systray popup and notifications have a rectangular background on rounded corners. STEPS TO REPRODUCE Expand the popup, or send a notification. OBSERVED RESULT The corner has a rectangular background. EXPECTED RESULT The corner should be rounded. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.27.0 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8 Kernel Version: 6.1.12-arch1-1 (64-bit) Graphics Platform: Wayland ADDITIONAL INFORMATION The screen is 3840x2160 with 200% scale.
Created attachment 156373 [details] Panel systray popup
Hmm, cannot reproduce. Do any other pop-ups and widgets exhibit the issue, or just the system tray and notifications?
Yes, it also happens with other widget popups, such as system monitor sensors. But I have 3 such widgets and only one of them has these corners. Changing the color scheme or Plasma theme makes these corners disappear for the current session.
I think it happens more frequently if the panel opacity is set to "Translucent" instead of "Adaptive".
Ah, the Korners bug. It got fixed in Plasma 6.1, IIRC.