Taking damage from a pointed dripstone while wearing a helmet makes the helmet invisible. Also, the game will crash when you try to move the helmet using the shift-click.
Steps to reproduce:
- Put helmet.
- Place the pointed dripstone so it can fall on you.
- Break the prop so the pointed dripstone falls on you.
- Remove the helmet with a shift and click.
The helmet became invisible and when you try to move it, the game crashes.
The helmet will not become invisible and the game will not crash.