Mod Version 1.15.2, MPM 20220818 snapshot

1. Make yourself crawling
2. Toggle MPM's crawl animation
3. Now can see Player is upside down.
   No error logs.

I think a solution would be only use MPM's crawl animation when installed together, and aquaacrobatics only needs to control bounding box.

it also happen with MPM's sleep/lay animation too