Ok so I went through about three pages of the bug threads and couldn't find a thread about this although I'm fairly sure someone must have said something before now so yes, thank you all back seat moderators, I am pretty much aware there is already a thread on this.

Chat does not work........ I cannot scroll up and it randomly scrolls up for me so I have to scroll all the way down again.
Also when I press fullscreen it like zooms in so I have to press it three times to actually get out of fullscreen.

I would have thought with the server restarting they might have fixed this 2 minutes ago but it's still here for me.
I'm using the standalone.

Well either way if it exists, it can't be locked. ^^"

The chat is indeed known, although I believe they are trying to still find resolution for it.
As for fullscreen, I've noticed that as well, especially on Nekodancer.