Welcome to TVPaint Community forums !

I was animating and everything was fine but I must have hit something and now my control panel is gone. It's on my 3rd board but not my 1st anymore. How do I fix this?

Images-
Gone on board 1-
But is still on board 3? -

It's the tiny arrow (black triangle) at the top right corner of the Project panel.

toggle off "View Full Screen",
(shortkey = [V] here, with my Windows version)

btw, what's your tvpa (and OS) versions exactly ?