Also reproduces in NVDA in latest code.

This affects all screen readers. The problem is that the account management menu is not correctly set up as a menu (and is in fact a dialog in the code), so it's treated as a dialog. Because it's built from a bunch of different views depending on very complex state logic, it would be hard for us to figure out what the correct way to handle it in all situations would be. I am handing the bug back over to the last engineer to do significant work restructuring the code, on the Sign-In team, as he will have significantly better context as to how the menu is actually assembled.