When e.g. going to https://github.com/qutebrowser/qutebrowser/issues/7814 and hovering an avatar/username, with simplebrowser and:
- Qt 5.15 and either X11 or Wayland: A card with the user information shows
- Qt 6.5 and X11: The card shows as well
- Qt 6.5 and Wayland: Nothing happens
This is reproducible with KDE Plasma and with Sway, though things seem to work fine under Weston.