oh, try clicking in the window anyways, it should notice the click. This is an unreal issue sometimes, will try to fix it for the next patch but as this would be outside the jam time, i cannot just patch it now. might add a new file with a note...
I did do that and play the game, and the cursor was fine everywhere else, it was just the main menu that didnt display it. Was a weird bug but didnt stop me from playing
Have provided a patched version as v0.1.4 and that version should not have the cursor issue anymore. Is a separat file to keep the original entry intact.