The focus behavior didn't change, but the location bar when focused has a new style that is slightly enlatged, and likely that's what surprised you. That's expected though.
Bug 1628435 Comment 1 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
The focus behavior didn't change, but the location bar when focused has a new style that is slightly enlarged, and likely that's what surprised you. That's expected though.