Thank you for reporting this bug to Ubuntu. Ubuntu 20.04 (focal) reached end-of-standard-support in May 2025.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it anymore. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in. ** Changed in: mutter (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1872459 Title: Qt Frameless Applications are not behaving well Status in mutter package in Ubuntu: Won't Fix Bug description: Description: Ubuntu Focal Fossa (development branch) Release: 20.04 Bug Detail: Mutter behave differently with Qt Application with Frame-less flags. example: 1- they are not resizable. 2- window snapping doesn't work. 3- they cannot be moved around the screen like other apps. Steps to reproduce: 1- Run any Qt frame-less window app (Qt::FrameLessWindowHint). (snap install olivia or snap install wonderwall, these are few apps which uses frame-less window hint optionally). You can build your own app with Qt if you have code. 2- Try to resize it. 3- Try to snap it to the edges. 4- Try to move it around the screen and try to move it long along X and Y axis. Expected Behavior: 1- Qt::FrameLessWindowHint windows with Qt::Window/Widget/Dialog flag are supposed to be resized if they are not set to be remain FixSize. 2- Qt::FrameLessWindowHint windows with Qt::Window/Widget/Dialog are supposed to trigger snapping on window snapping gesture by user. 3- Qt::FrameLessWindowHint windows with Qt::Window/Widget/Dialog are supposed to move all the way along the X and Y axis of user's screen. Note: Qt::FrameLessWindowHint enabled apps act normal under Unity7's Compiz/Metacity, KWin of KDE and xfwm of XFCE. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: mutter 3.36.1-3ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.11-0ubuntu26 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Mon Apr 13 18:23:20 2020 InstallationDate: Installed on 2020-04-11 (2 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200329) SourcePackage: mutter UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1872459/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
