The scrollbar in the location bar / URL bar / autocomplete widget is not working properly. The thumb can't be dragged. The arrows, however, work and you can scroll through the list using them. It looks similar to bug 42707

Just found something else while experimenting: The thumb of the bar can be dragged! But not as it should be. Somehow, the bar gets the coordinates wrong. Ok, so what's happening: Let's say the thumb is at the top. You grab it and try to pull it down to the bottom. Nothing happens. You at first you think, you can't drag it. But then, try to continue the dragging. Keep going down with the mouse beyond the end of the box and suddenly, the thumb starts moving! At about double length of the box, the thumb reaches the bottom of the box. As if the box believed it would have double length. I'll attach some snapshots to illustrate this.

dup *** This bug has been marked as a duplicate of 78344 ***

vfy