Public bug reported:
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 are supposed to be resized if they
are not set to be remain FixSize.
2- Qt::FrameLessWindowHint windows are supposed to trigger snapping on
window snapping gesture by user.
3- Qt::FrameLessWindowHint windows 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)
** Affects: mutter (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1872459
Title:
Qt Frameless Applications are not behaving well
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