[orca-list] Unable to edit certain text fields in Firefox

[Jason White <jason jasonjgw net>]

Can anyone else reproduce this?
Firefox 29, Orca 3.12.

Steps to reproduce:

1. Move to a text field in Firefox, e.g., search/location bar. Type some text
and use left/right cursor keys to move around inside the text field. All works
so far.

2. Move away from the text field, then move back to it. The text in the field
should now be marked as selected.

3. Use left/right cursor keys to move through the text.

Orca should move the cursor on the braille display and speak the characters as
the cursor moves, but does neither.

I'm reasonably sure this used to work fine.

Suggestions welcome.