I'm at my gold farm. i see the pigs spawning, but most of the pigs that summon start jumping straight away, even though there's nothing for them to jump on. if it matters the gold farm I'm using is the 1.16 and above version of ilmangos gold farm. (also the video file is 31mb so i cant upload here but here is a link to media fire were i uploaded it) 

https://www.mediafire.com/file/4z3by1irt0dyirv/Minecraft__1.17.1_-_Multiplayer_%25283rd-party_Server%2529_2021-09-03_09-11-16.mp4/file