I’m not getting checkpoints on Gravemind where I’m suppose to. I tried resetting the level, changing difficulties, closing out MCC, etc… Then finally I found my answer after a bit of messing around and it appears as though the Streaking Skull is the culprit. After turning OFF that particular skull, checkpoints appear when they’re suppose to.
For now, I hope this helps anyone who is having this problem. But this glitch will make LASO(co-op) damn near impossible. Even more so than usual. Either way, this is the only level I’ve come across this issue so hopefully it’s just Gravemind.