Tab bar height corruption

The tab bar height is messed when Textastic goes fullscreen after returning from document version history.

(Sorry if the fullscreen screenshots are big to show!)

Here what I've do:

- Create a new document:

- Move fullscreen, then go to browse document versions history:

- Now Textastic automatically exits fullscreen mode to go windowed mode, then enters the time machine like document history.

When I exit document history Textastic again first go windowed mode then automatically return fullscreen mode.

And this is what I get:

Manually going back to windowed mode doesn't help, the only solution is to close the window:

I can reproduce this bug every time, it's just a matter to enter document history when in fullscreen.