Sorry if it's been reported already, but I don't see it on the forum or on the known issues list.
It's hard to describe what's the issue so I recorded it instead: new TM bug
At first I thought it was random, but after a while of experimenting I managed to reproduce it consistently: bug reproduced
Since the video doesn't tell everything you need to press respawn right before the next checkpoint; the respawn animation shows you approaching the previous cp but you respawn at the one you pressed respawn right before (I can't into words today, I hope it's clear). I didn't manage to reproduce it in validation mode but in test mode it's consistent. (and tbh I didn't really try it with validation mode)
It's hard to describe what's the issue so I recorded it instead: new TM bug
At first I thought it was random, but after a while of experimenting I managed to reproduce it consistently: bug reproduced
Since the video doesn't tell everything you need to press respawn right before the next checkpoint; the respawn animation shows you approaching the previous cp but you respawn at the one you pressed respawn right before (I can't into words today, I hope it's clear). I didn't manage to reproduce it in validation mode but in test mode it's consistent. (and tbh I didn't really try it with validation mode)