Created attachment 118562 [details] Screenshot SUMMARY GtkComboBox list doesn't scroll if it is higher than screen STEPS TO REPRODUCE Click on a ComboBox to open its list that is higher than screen. I used LibreOffice 6.2.0 Format -> Character -> Font -> Language. OBSERVED RESULT The bottom of the list goes below the bottom of the screen and the list doesn't scroll neither with mouse wheel, nor with keyboard so that the lower part of the list can't be made visible, although it is possible to make selection blindly. EXPECTED RESULT The list should scroll with mouse wheel or keyboard. SOFTWARE/OS VERSIONS Manjaro Linux 18.0.3 Qt Version: 5.12.1 Gtk Version: 3.24.5 ADDITIONAL INFORMATION The issue appeared after update of gtk3 to 3.24.4 and it remains with gtk3 3.24.5. With gtk3 3.24.3 the list scrolls as expected. Adwaita and Adapta themes doesn't have this issue.
On my system the problem also occurs when I use the default gnome gtk theme (Adwaita). Probably is a gtk bug, it should be reported here https://gitlab.gnome.org/GNOME/gtk/issues Operating System: Arch Linux KDE Plasma Version: 5.15.2 KDE Frameworks Version: 5.55.0 Qt Version: 5.12.1
(In reply to Patrick Silva from comment #1) > On my system the problem also occurs when I use the default gnome gtk theme > (Adwaita). > Probably is a gtk bug, it should be reported here > https://gitlab.gnome.org/GNOME/gtk/issues > > Operating System: Arch Linux > KDE Plasma Version: 5.15.2 > KDE Frameworks Version: 5.55.0 > Qt Version: 5.12.1 At first I reported the issue at GNOME/gtk, but then I closed it because I couldn't reproduce it with Adwaita. https://gitlab.gnome.org/GNOME/gtk/issues/1719
I've found a way to reproduce the issue with Adwaita gtk theme (LibreOffice Writer: Styles->Edit Style...->Font->Language). So maybe this bug really belongs to gtk and not to breeze-gtk. I reopened the issue at the GNOME/gtk bug tracker.
Yes, that was a gtk bug. The issue is solved in gtk+ 3.24.7.