As I have blogged previously, the latest dev version of Chrome solved a long-standing issue with bookmark bar menus. However, it turns out that it also introduced a new bug. A picture is worth a few hundred words:
The first menu entry stays highlighted, even as you move your mouse to another entry in the same menu (using the cursor keys has the same effect).
Not a big deal, but annoying.
UPDATE (5/6/11): this only happens on my MacBook Pro 4,1 (Early 2008); my iMac (Early 2008) is fine. Go figure…