Regression: In any Text-area, you are prevented from using the (Del) key.
If you press (Del) key in a TextBox, it generates a warning.
This makes text editing difficult.
You have to go back to the next letter and use Backspace key.
To reproduce: You can activate the Text field and try using Del Key in fields such as Title, Staff Text, Rehearsal Mark, Dynamics etc.
Win 7, 32
MS: 2.2 nightly: rev: a161af4