SUMMARY The overlay that appears when you drag a window to an edge or corner of the screen now appears completely white and more opaque than before when using the Breeze and Darkly plasma themes, and appears black and very translucent with the Oxygen theme. STEPS TO REPRODUCE 1. Upgrade Qt to 6.11 2. Log out, log back in 3. Drag a window to the very edge of the screen OBSERVED RESULT White overlay EXPECTED RESULT Theme-colored overlay SOFTWARE/OS VERSIONS Windows: Linux/KDE Plasma: Arch KDE Plasma Version: 6.6.3 KDE Frameworks Version: 6.24.0 Qt Version: 6.11.0
Can you make a screenshot?
Created attachment 191038 [details] Window snapping to left here i hold a konsole window into the left snap area, the plasma theme used is darkly, but breeze looks identical here
A possibly relevant merge request was started @ https://invent.kde.org/plasma/libplasma/-/merge_requests/1466
*** Bug 518189 has been marked as a duplicate of this bug. ***
(In reply to Bug Janitor Service from comment #3) > A possibly relevant merge request was started @ > https://invent.kde.org/plasma/libplasma/-/merge_requests/1466 I can confirm this fixes the bug
*** Bug 518207 has been marked as a duplicate of this bug. ***
Git commit 9429ca67d79454a57cab3de6a97be4733b7c6b4e by Nicolas Fella. Committed on 26/03/2026 at 21:27. Pushed by nicolasfella into branch 'master'. desktoptheme: Remove duplicate stylesheet from SVGs Some SVGs randomly have more than one style sheet, with the same id This is clearly nonsensical and seems to cause issues with Qt 6.11 M +1 -35 src/desktoptheme/breeze/icons/battery.svg M +1 -36 src/desktoptheme/breeze/icons/printer.svg M +0 -35 src/desktoptheme/breeze/icons/wallet.svg M +0 -32 src/desktoptheme/breeze/icons/zoom.svg M +1 -36 src/desktoptheme/breeze/widgets/translucentbackground.svg https://invent.kde.org/plasma/libplasma/-/commit/9429ca67d79454a57cab3de6a97be4733b7c6b4e
Git commit fd023d53172dadd92b0c34727b9d02844a0294be by Nicolas Fella. Committed on 27/03/2026 at 10:20. Pushed by nicolasfella into branch 'Plasma/6.6'. desktoptheme: Remove duplicate stylesheet from SVGs Some SVGs randomly have more than one style sheet, with the same id This is clearly nonsensical and seems to cause issues with Qt 6.11 (cherry picked from commit 9429ca67d79454a57cab3de6a97be4733b7c6b4e) M +1 -35 src/desktoptheme/breeze/icons/battery.svg M +1 -36 src/desktoptheme/breeze/icons/printer.svg M +0 -35 src/desktoptheme/breeze/icons/wallet.svg M +0 -32 src/desktoptheme/breeze/icons/zoom.svg M +1 -36 src/desktoptheme/breeze/widgets/translucentbackground.svg https://invent.kde.org/plasma/libplasma/-/commit/fd023d53172dadd92b0c34727b9d02844a0294be
*** Bug 516597 has been marked as a duplicate of this bug. ***
*** Bug 518247 has been marked as a duplicate of this bug. ***
Created attachment 191089 [details] The theming is also broken both on wayland and x11 The theming is also broken in windows. tried changing themes and colorschemes, no luck.
I’m using KDE Plasma version 6.6.4. The bug seems to be fixed only when I set the "Plasma Style" theme to Breeze. With other themes (I’ve tried many of the top-downloaded ones), the overlay remains white.
(In reply to ytr7ds from comment #12) > I’m using KDE Plasma version 6.6.4. > The bug seems to be fixed only when I set the "Plasma Style" theme to > Breeze. > With other themes (I’ve tried many of the top-downloaded ones), the overlay > remains white. Please report this to the theme author, most likely the theme's SVG files has similarly invalid style sheets