A few days ago an update was released where it's now possible to replay any unlocked levels. For some people this may have caused that entering the seagull puzzle or gradient puzzle (the ones where small puzzle pieces turn into bigger ones), the game thought these levels were triggered to be replayed even if the user didn't select that. This is now fixed so it doesn't happen again. As a note, if these levels have previously been completed, nothing is changed in what's unlocked in level select and general savefile progress, it's just an optional replay of previous levels.