https://bugs.kde.org/show_bug.cgi?id=501828
Bug ID: 501828
Summary: Permanent focus stealing _or_ crash with non-sense
Gtk4 code
Classification: Plasma
Product: kwin
Version: 6.3.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: pos...@posteo.eu
Target Milestone: ---
SUMMARY
I've stumbled over the following two issues by accident:
1) If a Gtk4 popovermenu is set visible in the _closed_ event, it will re-open
and steal the focus: You can no longer click anything else, but need to kill
the app in another tty
2) If you additionally make the popover invisible afterwards, it will crash
kwin. Could reproduce it on Fedora 41 with Gtk 4.16.12 and openSUSE Tumbleweed
with Gtk 4.18.2, both running Kwin 6.3.3 Wayland.
If it doesn't crash immediately for you, keep clicking to close the popover,
eventually it should.
The code of course makes no sense, but I wanted to report it nonetheless.
STEPS TO REPRODUCE
Here's a minimal reproducer:
```
import gi
gi.require_version("Gtk", "4.0")
from gi.repository import Gtk
from gi.repository import GLib
def hide_popover(popover):
popover.set_visible(False)
def on_closed(popover):
print("popover closed")
popover.set_visible(True)
# The following line makes kwin eventually crash
# Commment it out instead for permanent focus stealing
GLib.timeout_add(100, hide_popover, popover)
def on_activate(app):
win = Gtk.ApplicationWindow(application=app)
popovermenu = Gtk.PopoverMenu()
popovermenu.connect("closed", on_closed)
popovermenu.set_size_request(100, 100)
win.set_child(popovermenu)
popovermenu.popup()
win.present()
app = Gtk.Application(application_id='org.gtk.Example')
app.connect('activate', on_activate)
app.run(None)
```
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20250318
KDE Plasma Version: 6.3.3
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.2
Kernel Version: 6.13.6-1-default (64-bit)
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