Pressing ctrl+s then ctrl+r in swift succession caused pico8 to freeze.

This did not resolve, and as a result the file was not saved, and was corrupted.

(I had a very recent backup so only lost a very short SFX. This was actually the third time I've had this issue, although the other two times it either resolved or the file wasn't corrupted.)

This was with Windows 10 and pico8 0.1.12c.