Thanks for looking into this - for anyone else testing, could you check as well if your Anki is using xwayland or native Wayland? Some distros will set xwayland as default for Qt via env vars.
It would be good if the package build could support native Wayland so you get e.g. proper scaling when you drag the window from a high dpi laptop screen to a normal dpi desktop monitor… But showing the window at all will still be an improvement 