When riding a pig, the player cannot change direction with the /player x look command, and when attacking the pig, it remains facing the same way as the player, if the player has a carrot on a stick in their hand. If they don't the pig responds to my actions, like running around when I whack it, and breeding. But the /player x look still dont work.

With striders, it is different. The /player x look command works, and the strider will change direction provided the player has a warped fungus on a stick. If the player doesn't have a warped fungus on a stick, behaviour of the strider is similar to that of the pig, except /player x look works.

ah.

big bug is game crashing.

This is not even a bug - just inconsistency and lack of feature completion.

is this only affecting 1.16, or 1.15 as well (pig-wise)

and btw it's also affecting 1.15 according to the guy in the SciCraft Discord

that should be fixed.