Hello,
I was watching some players and for some reason when I flew in front of them while they were shooting a rocket the rocket actually hit me and blew up in their face rather then it going through me. Any idea on what would cause this? Is this normal? 

This shouldn't be possible with vanish. Is it something you are able to reproduce ? Otherwise it might be caused by another plugin interfering with vanish. If you message me on discord Whispers88#0007 I'd be happy to help you investigate what's going on.