Originally posted by Fluke:

Wow, i am an idiot hahaha I totally forgot that when I briefly joined a dedicated server some time ago they had me install a mod despite it being mostly vanilla. When I looked to see if i had mods I overlooked it, but deleting it totally fixed the issue, which makes so much more sense now. Hope this helps anybody else out there, double check for mods, the updates tend to break em!

You should probably add this to the top so people don't have to read all this to find the answer.