[peterhi]

I'm not sure I explained the problem correctly. Do the following:

1. Create a new window
2. Open, say, twenty tabs (Command-T twenty times, e.g.)
3. Scroll to the top of tab drawer
4. Grab the top tab in the tab drawer, and try to drag it down so that it comes after the twentieth tab.

On my system, i can't do step (4) above, because OW doesn't scroll the tab drawer past the bottom _displayed_ tab. I can't scroll down to the region of the tab drawer below that bottom _displayed_ tab.