My students ran into another wacky issue. They somehow got stuck in the blue blocks in Return to the Cheeseteroid. They can jump up and down, but can't move away from the blocks. When they stop jumping, they sink into the blocks and everything goes black.
Here's a video: https://1drv.ms/v/s!Aq2fR2mx54HLqJYKFhxhWaWaTo3FfA