When adding a dictionary entry (NVDA+N, P, D, then enter, then alt+a or select an entry and alt+e)

The replacement field can be accessed directly by pressing alt+r.

The regular expression field has "r" underlined, however, alt+r only goes to replacement.

Also in the add dictionary entry dialog, the underlines only appear visually when alt is pressed. In the edit dictionary entry field, the appropriate letters are underlined all the time.

Both very minor issues.