Steps to reproduce: * With the 2 June Nightly, create a new tab. * Start typing in awesome bar. Choose characters such that URL completion occurs and a selection list appears. * Click on a selection from the drop down list. * Verify the URL from the selected item appears in the awesome bar. * Press Enter. Expected: Visit the selected URL, as shown in the awesome bar. Actual: The URL from the URL completion step reappears in the awesome bar and that page is visited. I see this issue on Ubuntu, also seen on Windows (<http://forums.mozillazine.org/viewtopic.php?p=12028013#p12028013>).

I just verified I get the same behavior with a new profile. Workaround: Hit the space bar between selecting the URL and pressing Enter.

Regression window: Good: http://hg.mozilla.org/mozilla-central/rev/7bf0125b26b5 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/15.0 Firefox/15.0a1 ID:20120601035703 Bad: http://hg.mozilla.org/mozilla-central/rev/305cd10b57d2 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/15.0 Firefox/15.0a1 ID:20120601055003 Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=7bf0125b26b5&tochange=305cd10b57d2 Suspected: bug Bug 720081

Reproduced on today's Aurora too http://hg.mozilla.org/releases/mozilla-aurora/rev/10b7f6c9be4f Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20120602 Firefox/14.0a2 ID:20120602042008

Please do not back out bug 720081, We have a db version bump there. Will look into this soon

Alice0775 bug 760843 is different steps: type "yahoo" and press enter no longer takes uesr straight to web page.]. The user in question doesn't have any autocomplete that appears in dropplist when typing yahoo.

(In reply to Will Budreau from comment #8) > Alice0775 bug 760843 is different steps: type "yahoo" and press enter no > longer takes uesr straight to web page.]. The user in question doesn't have > any autocomplete that appears in dropplist when typing yahoo. If You mean Bug 760836, Yes, it is intentional behavior.

We can back out the autocomplete controller changes only, right? That should fix this, so I think we should do that while we investigate further.

(and then retrigger nightlies)

Did that: https://hg.mozilla.org/mozilla-central/rev/9274e6b53af4 https://hg.mozilla.org/releases/mozilla-aurora/rev/6db7fbab6f0c

I tried to retrigger nightlies, but I'm not sure whether I succeeded.

Looks like the nightly builds are running now.

nope, not yet.

Aurora and Nightly builds are fixed now, completely resolved.

Mozilla/5.0 (X11; Linux i686; rv:14.0) Gecko/20100101 Firefox/14.0 Verified in F14 beta 8 on Ubuntu 12.04, Mac OS 10.7 and Windows XP using steps from comment 0.