Created attachment 8732683 [details] tab glitch.gif User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Firefox/45.0 Build ID: 20160315153207 Steps to reproduce: Drag a tab with a great deal of content in it from one window to another. (See attached gif for visual demonstration) Actual results: The blue tab placement line persisted in the tab bar. (See attached gif) Expected results: The blue tab placement line should disappear after the tab is dropped.
If you have steps that always reproduce this problem, it would be useful if you could leave them in bug 1161767. Thank you!