1327025 - Mousemove events don't fire if I press left mouse button on the page and move mouse above iframe

Status: UNCONFIRMED

(Core :: DOM: Events, defect, P5)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
1. Switch Firefox window to normal (not maximized) mode
2. Open url [1] or url [2] or url [3]
3. Hover mouse over the map on the page, hold left mouse button
4. Move mouse outside of the window
5. Move mouse over any iframe on the page

AR:  In Step 4 map follows mouse pointer. In Step 5 map stays still
ER:  In Step 5 map should also follow mouse pointer

Note:  Result of Step 4 proves that mousemove event fires even OUTSIDE THE WINDOW.

> [1] http://msk.rusavtobus.ru/
> [2] http://wikiroutes.info/msk
> [3] data:text/html,<script>onmousemove=function(e){D.innerHTML = e.screenX+" - "+e.screenY}</script><div id="D"></div><iframe></iframe>

Comment 1

[Hsin-Yi Tsai (she/her) [:hsinyi]]

Per discussion with Stone, it seems something goes wrong with event target determination.

Comment 2

[castiel743]

Whatever the discussion was about, please note that bug 185919 "beats" this bug, but this one has
additional conditions (left mouse button being pressed). And it doesn't look like there was a strong
decision about bug 185919... I think it is the main problem here.
Also, Google Chrome browser does the same thing as Firefox here.

Comment 3

[Ming-Chou Shih [:stone]]

Can't be reproduced the problem with url [1] and [2] in the bug description on Chrome. Only url [3] can be reproduced on Chrome.

Also observed that Chrome fires mousemove events to the listeners of the document when the mouse left button is hold (on the map) and moved on the iframe of url [2].

Comment 4

[Jens Stutte [:jstutte]]

Bulk-downgrade of unassigned, untouched DOM/Storage bug's priority.

If you have reason to believe, this is wrong, please write a comment and ni :jstutte.