Search Party Game

Periodically in Search Party the word Mathematics comes up under the subject title and the playbox is empty–no words, nothing.  The game outline is there, but he only printing is Mathematics.  You cannot retrieve the game even if you are in the middle of playing. The only thing you can do to receive the points earned at that time is to stop the game. If you do anything else, then the game disappears.  I have had this happen at least a dozen or more times over the last month or so.  Since it is printing the word Mathematics in the playbox, and the playbox is outlined, but empty, I do not think it is my computer.  Am I the only one this has happened to??