Wayland glitches (and GNOME patch)

I run Flatpak apps under GNOME with Mutter as compositor on top of Wayland. (I haven't tested on anything else since I'm not really in a position to test with other DE options yet.

A lot of Qt apps running wayland have bugs that don't reproduce when use xbc QT_QPA_PLATFORM. This includes menus appearing in the wrong place, broken drag and drop, etc.

I notice this patch https://invent.kde.org/packaging/flatpak-kde-runtime/-/blob/qt5.15lts/patch/qtbase-use-wayland-on-gnome.patch that basically disable the code that disable Wayland under GNOME. I wonder what's the rationale since this would actually resolve issues, at least in mys setup.