Hmmm...
Interesting Question, did you press either escape, r or f5?
I'll take a look at it once I got a bit time, should be this week.
I have no clue, why clicking on an item closes the game, could you send me like a short video via Discord or YouTube or whatever you like, so I can understand it a little better, I'll try my best to make it work!
(Also make sure your browser setting for pressing keys are disabled for A D F G, which browser do you use?)
Happy to hear from you soon!