First of all, MANY THANKS to the backport author and you for accepring the backport to 1.18!
Onto the issue.

It's not a breaking bug, but
When approaching pilot from the angles the player is rapidy switched between standing and crawling stance and sometimes forced into the latter.
Unlike when approaching from the front in which case the player is stepping up onto the pilot.
I'm guessing this is due to pilot's irregular hitbox.

Not sure it matters but mods specs:

• Forge 40.2.21
• Bells and Whistels v0.4.1-1.18.2

Video of the thing:

woah this is pretty freaky thanks for the issue