Thanks for playing!
Unfortunately I didn't get a chance to add audio, so that's not a bug. As per the two bugs you found, I managed to fix them today, but (again) unfortunately I won't be able to upload the update until after the jam is over.
For those interested, the bug was an overflow error in PICO-8. PICO-8 uses signed 16:16 fixed point numbers, so the integer range is -32,768 to +32,767 and the collision algorithm was going above positive into a very large negative, giving false positives for collisions. A simple absolute value function seems to have fixed everything.