It looks like the dialog doesn't get activated in the Linux build (is it left click? I tried both left and right when the cursor is spinning at the beginning but nothing happens) I'll boot into windows sometime and see what the difference is sometime
Ah x///x thanks, I just finished the last level and the final door didn't spawn at the top of the cube after the dialog (I checked someone's youtube video to see what the next step was, not sure if collecting more vents and skateboards than needed might've bugged it?)