Comment 2 for bug 1027050

Here is more precise testcase:

1. Run firefox with key -p and create new profile.
2. Run: firefox -p new_profile_name
    At this point you will have firefox with totally clean profile.
3. Open addon manager and check there are only system-wide extensions (UFM and yours).
    Actually UFM one is not important and could be disabled but lets leave as-is.
4. Go to url https://addons.mozilla.org/en-US/firefox/addon/url-addon-bar/ and install extension.
5. Enable Addon Bar from context menu and drop some icons on it through panels customization.
    Just to make sure extension works fine.
6. Close browser.
7. Start it again (same as at step 2).

I've tested it twice and in both cases I had the same issue. Menu was not integrated _after_ browser restart.