Wow that is VERY strange! It looks like there's an issue with the canvas not being correctly sized for the game window. Did the opening scenes play alright? What operating system are you using? Before this happened did you resize the game window at all?
Actually, ignore my last reply. I think i was able to reproduce your error on my side.
You're playing in windowed mode, correct?
I'll work on getting a patch out tomorrow that will fix that issue. I'm so sorry you ran into this error (+ thank you so much for finding it!!). I'll get the fix to you as soon as I can!