*Just* got it back from the dealer with 3.5.1 installed.
Entering WiFi keys that are not completely numeric is now BROKEN.
It still has the three buttons to select Alpha, Numeric, or Symbol entry. Only if you change away from the default Numeric keypad to the others, the keyboard displays all disabled. You can shift, caps lock, whatever. You can see (dark grey, disabled) the keypad. You just can't enter any data. Change to any of the others, including the numeric one which was working, and same thing.
Just spoke with Ford MFT Support. Agent said it was "a known problem" with no fix at this time. He said dealers were aware of it and they'd let us know when there was a fix. I'll take that bet.
Mind numbing. This was worked in every other version over the last year. The "best" version yet and this is all of a sudden broken.