Created attachment 2089951 [details] A Screencast Demonstrating Reproduction With C++ On F42 Description of problem: : Under `kwin-wayland-6.3.5-1`, the vertical resize direction of an undocked `QDockWidget`, when resized from its top-right corner, is inverted. Version-Release number of selected component (if applicable): : âȘ `qt6-filesystem-6.9.0-2.fc42.x86_64.rpm` [^2] How reproducible: : 100% Steps to reproduce: : 1. Install `PRETTY_NAME="Fedora Linux 42 (KDE Plasma Desktop Edition)"`. 2. Compile (or run, if that works for you) the attached C++ or PyQt6 code. [^3] 3. Undock the `QDockWidget`. 4. Vertically resize its top-right corner. It's difficult to grab, but is grabbable. Actual results: : It shouldn't be inverted. No alternative corner exhibits this behaviour. Expected results: : > The vertical resize direction of an undocked `QDockWidget`, when resized from its top-right corner, is inverted. Additional info: : Originally reported at https://bugreports.qt.io/browse/QTBUG-136715#comment-886269: [^1] > To push for a solution, I'd probably report a bug to Fedora. I can't imagine this to be a KDE issue, otherwise it would reproduce on openSuSE Leap. [^1]: https://bugreports.qt.io/browse/QTBUG-136715?focusedId=886269&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-886269:~:text=To%20push%20for%20a%20solution%2C%20I'd%20probably%20report%20a%20bug%20to%20Fedora.%20I%20can't%20imagine%20this%20to%20be%20a%20KDE%20issue%2C%20otherwise%20it%20would%20reproduce%20on%20openSuSE%20Leap. [^2]: https://koji.fedoraproject.org/koji/rpminfo?rpmID=42529802#:~:text=Information%20for%20RPM-,qt6%2Dfilesystem%2D6.9.0%2D2.fc42.x86_64.rpm,-ID [^3]: https://bugreports.qt.io/secure/attachment/175415/reproducible_python_sample.py
Created attachment 2089952 [details] A Screencast Demonstrating Reproduction With PyQt6 On F42
Created attachment 2089953 [details] A Screencast Demonstrating Non-Reproduction With C++ On openSUSE Leap 15.6
Created attachment 2089954 [details] A C++ Sample That Produces The Problem On F42
Created attachment 2089955 [details] A PyQt6 Sample That Produces The Problem On F42
Hi, I've been following the Qt issue and I could reproduce it on Fedora 42, however, I'm unsure how this is related and only reproducible on Fedora, because we don't modify anything related to QDockWidget.
(In reply to Jan Grulich from comment #5) > Hi, I've been following the Qt issue and I could reproduce it on Fedora 42, > however, I'm unsure how this is related and only reproducible on Fedora, > because we don't modify anything related to QDockWidget. I'm rather a novice at debugging, but I've a lot of VMs now, so if you want me to trace them somehow, I'll try. I doubt I can do any of this better than you can, though. This could be a long shot, but perhaps it's similar to https://github.com/MediaArea/MediaInfo/issues/1111#issuecomment-2853896160:~:text=is%20an%20int.-,In%20conclusion%2C%20this%20is%20an%20issue%20with%20Linux%20libraries%20and%20their%20linking%2C%20not%20with%20MediaInfo.,-%F0%9F%91%8D1, where something is being compiled strangely...? đ€·