Open Bug 1204350 Opened 9 years ago Updated 2 years ago

Moving mouse over autoscroll circle is causing numerous 'mouseover'/'mouseout' events

Categories

(Core :: DOM: UI Events & Focus Handling, defect)

Product:
Core
Component:
DOM: UI Events & Focus Handling
Type:
defect

Tracking

()

Tracking Flags:
Tracking Status
firefox43 --- affected

People

(Reporter: arni2033, Unassigned)

References

(
URL
)

Details

STR:   (Win7_64, Nightly 43, 32bit, ID 20150910030225, new profile, safe mode)
1. Open this "data:" url or just click URL in the form above
>   data:text/html,<body onmouseover="document.title=Date.now()" onmouseout="document.title=Date.now()"><style>body{margin:0px;height:200%;background:gray}
2. Middle click on gray area
3. Place mouse over autoscroll circle, and don't move for ~2 seconds
4. Move mouse within autoscroll circle (don't cross its borders)

Result:       Moving mouse over autoscroll circle is causing numerous 'mouseover'/'mouseout' events
Expectations: Either (A) or (B).   [(A) is preferable]
   A) mouseover/out events should fire regardless of autoscroll circle, just like it doesn't
   B) autoscroll circle should be threated like part of UI, e.g. toolbar. So when I move mouse to autoscroll circle, 'mouseout' event should fire for <body>, and 'mouseover' event should fire only when I move mouse back to content.
See Also: → 311705
See Also: → 1204362
See Also: → 1231101
Has STR: --- → yes
See Also: → 1327543
Component: Event Handling → User events and focus handling
Severity: normal → S3
You need to log in before you can comment on or make changes to this bug.