https://bugs.kde.org/show_bug.cgi?id=380392
Bug ID: 380392
Summary: KWindowSystem::setMainWindow kills new parent on
deletion with Qt 5.9
Product: frameworks-kwindowsystem
Version: 5.34.0
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: critical
Priority: NOR
Component: general
Assignee: mgraess...@kde.org
Reporter: fab...@ritter-vogt.de
CC: kdelibs-b...@kde.org
Target Milestone: ---
Qt 5.9 changed the behaviour of destructing foreign QWindow instances,
which results in child window destructors somehow causing X11 BadWindow errors.
Those crash the parent app, so libreoffice, chromium and firefox.
This makes it impossible to open or save documents.
A workaround is to disable the connection, but that causes a memory leak
AFAICT.
I'm not sure whether the actual underlying bug is on Qt side or KDE side.
See also https://github.com/openSUSE/kmozillahelper/issues/14
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