458869 - Weird OnMouseOut behaviour when moving out of frame

Status: VERIFIED WORKSFORME

(Camino Graveyard :: Page Layout, defect)

Description

[Rembert Oldenboom]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en; rv:1.8.1.17) Gecko/20080915 Camino/1.6.4 (like Firefox/2.0.0.17)
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en; rv:1.8.1.17) Gecko/20080915 Camino/1.6.4 (like Firefox/2.0.0.17)

On one frame the cross browser marquee javascript from dynamic drive is running. This shows a marquee which stops when moved over with mouse. When moving out again, it continues again. This frame is at the bottom of the window. The marquee is directly at the top of the frame.

Problem occurs when stopping the marquee and then moving up again to the other frame. It seems OnMouseOut does fire but OnMouseOver seems to fire immediately afterwards. When increasing the padding between marquee and top of the frame, the problem won't occur nor will it occur when moving out of the marquee text horizontally and then out of the frame. If one moves the pointer really slowly, it might go well as well.

Problem only occurs on Camino, not on Firefox.

Reproducible: Always

Steps to Reproduce:
1. Open www.schrijftalent.net
2. Move mouse over the scrolling text at the bottom
3. Quickly move up again and see what happens with the scrolling text
Actual Results:  
The scroll becomes very very sluggish, probably due to mouseout/mouseover firing repeatedly.

Expected Results:  
The scroll should just continue.

Comment 1

[Stuart Morgan]

I was able to repro this in 1.6 after a few tries, but not in a trunk nightly; it was probably fixed by the mouse tracking changes in Cocoa widgets.