Weird bug, but anything in the game that is above the bottom of the pause button is not clickable. I found this out in my Coffee Catcher game. It is most likely that because the X button does work in the editor. I pushed an update to see if it would fix itself, but it did not work.
6d
13
Hello,
Thank you for reporting the issue - this was not known, so very useful.
We will look into it.
The Upit Team