Ah I see, I (mu brain!) had actually missed that email, sorry! I just tried this and I'm getting the same problems. The horizontal scrolling doesn't work :-(
It's funny, you replied to my email that said where to get the beta :P
That email was:
I didn't see any possibilities to resize the documentation popup. I
did manage to enable the open in browser button though and get links
to work. I've updated the beta at:
Could you try that and let me know how it goes for you?