Playing ranked match on iOS client (iPhone). Game became stuck during targeting when casting a targeted spell (Boomerang Basics). After selecting spell target, nothing happened and could not select a spell target again. After selecting “Cancel”, targeting prompt buttons disappear but spell remains in the stack UI. I attempted to close and reopen the iOS client (there are so many bugs for so many different reasons that I have learned that this is the fastest way to resolve problems), but when I reconnected to the game, the game board was empty with no UI elements (see screenshot).

This is primarily an issue because closing and reopening the app and reconnecting to a match in progress has long been the only way to resolve the frequent game breaking bugs that occur during regular gameplay on iOS client. If this issue occurs consistently and there is no way to resolve the other frequent issues in gameplay, the game will become unplayable.