when i switch to a one block high entity, it drags me south-west while changing to the one block high FOV, but when it stops dragging, it pops back up to a two high FOV. I don think its clashing with mods because my friends are using the exact same custom modpack we made, and they do not have this problem

As Morph has just been rewritten and released for MC 1.16.5, I am clearing the issue tracker as I have not provided any support Morph for 1.12.2 and earlier. My apologies for not addressing your issue.

same issue on my end

Same , FIX THIS!

It got fixed for me when i removed pymtech and lucraft core mod