See: https://bugzilla.mozilla.org/show_bug.cgi?id=691884#c33 for detailed instructions on how to reproduce.
I can also reproduce this with the ENTER key.
Copying over str
Steps to reproduce:
1. Open 2 tabs in Firefox
2. Go to www.google.com
3. Start the Inspect mode
4. Click on the google logo
5. Click on the other tab
6. Click back on google tab
7. Press ESC
Inspect mode should exit
ESC, RETURN, left, right, top and bottom shortcuts don't work if the veil is not focused.
This also happens when the breadcrumbs are clicked (when they get the focus).
Should ESC should also work from the Style Panel?
I think this is a pretty annoying, and I think this should be fixed in Firefox 11 (Aurora).
This has been fixed by bug 703031
The issue is not reproducible on Firefox 12:
Mozilla/5.0 (Windows NT 5.1; rv:12.0a1) Gecko/20120129 Firefox/12.0a1
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:12.0a1) Gecko/20120129 Firefox/12.0a1
Mozilla/5.0 (X11; Linux x86_64; rv:12.0a1) Gecko/20120130 Firefox/12.0a1
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0a1) Gecko/20120129 Firefox/12.0a1
Setting the resolution to verified fixed.