toolbar expands and cuts off scrollbar/bottom

I'm loading everything with the defaults and after initially loading everything looks fine but the toolbar seems to expand to become taller and when you have text that requires a scrollbar you can't see the bottom right of the scrollbar with the arrow and you also can't see the last line you're typing because it is basically cut off.

So I guess in short the toolbar becomes taller than it should be and cuts off the textarea and scrollbar

Any idea how to fix it?