Bug 511904

Summary: Transparent Clip Monitor and Project monitor window
Product: [Applications] kdenlive Reporter: Francesco Di Nubila <francescodinubila06>
Component: User Interface & MiscellaneousAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED WORKSFORME    
Severity: minor CC: berndmj
Priority: NOR    
Version First Reported In: 22.12.3   
Target Milestone: ---   
Platform: Debian stable   
OS: ChromeOS   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screenshot explaining the issue

Description Francesco Di Nubila 2025-11-10 10:56:03 UTC
Created attachment 186667 [details]
Screenshot explaining the issue

SUMMARY
Transparent Clip Monitor and Project monitor window

STEPS TO REPRODUCE
1. Just open Kdenlive, there is no particular step to follow to reproduce the issue

OBSERVED RESULT
Clip Monitor and Project Monitor windows show what is under the Kdenlive window (the ChromeOS desktop or other opened app) outside of the video rectangle, indicating an issue with window compositing/opacity.

EXPECTED RESULT
Clip Monitor and Project Monitor window should show a background color and not what's behind them.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian GNU/Linux 12 (bookworm)
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
ChromeOS Host: ChromeOS moli, version 141.16404.0
Installation Method: sudo apt install kdenlive
MLT Version: 7.12.0
Windowing System: Wayland
GPU Acceleration: enabled
Host CPU: 12th Gen Intel(R) Core(TM) i7-1270P
Host GPU: Intel Iris Xe Graphics (Integrated)
Comment 1 Bernd 2025-11-10 18:08:34 UTC
Your version of Kdenlive is almost 3 years old. Please update to the latest version 25.08.3 and see whether the issue still exists. Thanks!
Comment 2 Bug Janitor Service 2025-11-25 03:46:18 UTC
๐Ÿ›๐Ÿงน โš ๏ธ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Francesco Di Nubila 2025-11-25 11:07:21 UTC
I installed the new version (25.08.3) via AppImage and it crashes at startup with: The Wayland connection broke. Did the Wayland compositor die?.
I could run the app by forcing it to use X11 running: QT_QPA_PLATFORM=xcb ./kdenlive-25.08.3-x86_64.AppImage and the reported bug does not appear in X11.
Comment 4 Bernd 2025-11-25 15:10:44 UTC
(In reply to Francesco Di Nubila from comment #3)
> I installed the new version (25.08.3) via AppImage and it crashes at startup
> with: The Wayland connection broke. Did the Wayland compositor die?.
> I could run the app by forcing it to use X11 running: QT_QPA_PLATFORM=xcb
> ./kdenlive-25.08.3-x86_64.AppImage and the reported bug does not appear in
> X11.

Thanks for testing it with 25.08.3 and confirming it works. Closing the bug report now.

For the Wayland-related crash please open a new bug report if you want to report it ;-)