tooltip flickers when too long

I cannot use jsfiddle for an example as it doesn't provide a fresh JQuery UI.

Reproduction: create a tooltip that is so long that it either spans from the left edge to the right edge of the window or at least reaches the right edge of the window. e.g.

<script>    
$(function()
{
	$(document).tooltip();
});
</script>
<input type="text" name="whatever" size="15" maxlength="40" value="" title="A very very very very very long text here. A very very very very very long text here. A very very very very very long text here. A very very very very very long text here. A very very very very very long text here. A very very very very very long text here." />

What happens:

IE8: tooltip flickers continuously when hovered over it.

Firefox: tooltip flickers once when hovered over it.

IE9: tooltip flickers once and then disappears

Ah, wait, I think I have now found the reason. It happens when the tooltip is so large that it reaches the right edge and then expands to the left so much that it is under the mouse. In that case it seems to break/intercept the hovering and depending on browser implementation it flickers more or less.

I think the widget should work in such a way that it automatically adjusts in size when it is forced to span over the original hover event area/element. One should also be able to give it a maximum horizontal/vertical size. That may be possible with CSS (I'll try that), but I think it might be helpful to have maxwidth and maxheight options for it.