gtk4+wayland: clicking GtkComboBox dropdown entry hosted in a GtkPopover closes its parent GtkPopover
Under wayland with gtk4-4.2.1-1 a GtkPopover (attached to a GtkMenuButton) with a GtkComboBox in it is autoclosed on selecting an entry from the GtkComboBox dropdown when the mouse is released.
To reproduce with the attached popover-gtk4.ui
GDK_BACKEND=wayland gtk4-builder-tool preview popover-gtk4.ui click the menubutton to get the popover click the combobox to get its dropdown click on a dropdown entry it closes the dropdown on mouse press and closes the popover on mouse release :-(
with GDK_BACKEND=x11 gtk4-builder-tool preview popover-gtk4.ui the popover stays open as wanted
FWIW under wayland and gtk3 the popover stays open, e.g. GDK_BACKEND=wayland glade-previewer -f popover-gtk3.ui