User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:35.0) Gecko/20100101 Firefox/35.0 Build ID: 20140919030202 Steps to reproduce: Double click/tap-hold on any webpage. Actual results: If you start moving the mouse (still keeping mouse button pressed), the window starts moving. Expected results: The window shouldn't move.
Dup Bug 1070038 ?
I get this. I also get this if I try and select a part of the URL in the location bar. So it affects the browser's chrome as well the actual webpage. I'm using Firefox Nightly running on OS X Yosemite public beta 3.