jQuery hover(): mouseout does not fire when using overflow:auto (with scrollbars)

I’m using jQuery’s hover() helper to attach some behavior to <li> elements in a <ul> with max-height and overflow:auto CSS properties.

When the height of the <ul> goes beyond max-height and the vertical scrollbar appears, hovering over the <li> elements triggers mouseOver, but if I move to the right to the scrollbar and start scrolling with the mouse, the mouseOut event never fires. (I have to hover back on the element and exit through some other direction to make mouseOut fire).

Is this a problem in jQuery or is it my specific situation that’s triggering the bug?

Note: the <li> elements have display:block attached to them.

Answer

Appears to be a bug in Firefox only – jQuery bugtracker has an open ticket here.