Yeah my extra row of keys is a dismembered shell of what it was. I will say, though, Pythonista has held up miraculously perfectly throughout the 11 beta.
The next day...
Whoa! I wrote this yesterday but never submitted it. Here it is waiting for me. Amazingly, in the span of less than 24 hours, beta 5 came and the extra row has reappeared! Huzzah!