I've discovered that on at least some occasions, when the window is completely non-responsive (but still movable by ALT+Drag, so definitely on top in the window order) if I wait long enough, it becomes responsive again, as if there's some godawful loop running or resource request which eventually times out.
I've discovered that on at least some occasions, when the window is completely non-responsive (but still movable by ALT+Drag, so definitely on top in the window order) if I wait long enough, it becomes responsive again, as if there's some godawful loop running or resource request which eventually times out.