Currently it is very hard to move mouse pointer inside of popover area. The only maneuver is to precisely jerk the mouse in direction of popover. This path makes anchor and popover "active" areas overlap, so it becomes possible to smoothly move mouse to popover interior.
Created attachment 179725 [details] Patch
Comment on attachment 179725 [details] Patch Clearing flags on attachment: 179725 Committed r137905: <http://trac.webkit.org/changeset/137905>
All reviewed patches have been landed. Closing bug.
Re-opened since this is blocked by bug 105765