Hey, I was playing with the feline race earlier and noticed that creepers were barely ever running away from them? Not sure if this is a bug or intentional but they still seem to sneak up on you and explode as usual.

I tried it out some more, it seems like they do run away most of the time but sometimes they just don't? I think it has something to do with them running into a block but instead of climbing over it or going around it they just stay there and then blow up because they're close enough to the player.

Yeah, that's just Minecraft's Pathfinding being busted. Them blowing up is technically part of the fabric version, so I won't do anything for it on 1.16.5. Maybe for 1.17, depending on how far I move away from the original code.