Comment 19 for bug 239462

I talked informally with some people and they came up with a situation where you really do want the auto-hide behavior: a large element with clickable sub-regions (e.g. an imagemap) and a long tooltip. If there were no auto-hide, the tooltip would not go away as long as you had the pointer over the element, and depending where it was, could make it very hard to target the sub-region you wanted.