1292041 - Touching an element fires twice on pointerenter and pointerleave

Status: RESOLVED DUPLICATE of bug 1285070

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

Description

[brooke]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:47.0) Gecko/20100101 Firefox/47.0
Build ID: 20160606114227
Firefox for Android

Steps to reproduce:

Firefox 48 on Windows 10 Mobile (a tablet)

about:config:-

	dom.w3c_touch_events.enabled = 2
	dom.w3c_pointer_events.enabled = true
	layout.css.touch_action.enabled = true

CSS style:-

	span.a-shell {
		-moz-user-select: none;
		touch-action: none;
		display: block;
		cursor: pointer;
		outline: none;
	}

Element to test:-

	<span class='a-shell' tabindex='-1' draggable='false' onpointerup=\"up(this,event);\" onpointerdown=\"down(this,event);\" onpointerenter=\"enter.main(this,event);\" onpointerleave=\"leave.main(this,event);\">Test</span>

The following events sequence were recorded after touching down-&-up on the above element:-

1)	enter
	pointerType: touch

2)	down
	pointerType: touch

3) up
	pointerType: touch

4)	leave
	pointerType: touch

5)	enter
	pointerType: mouse

6)	leave
	pointerType: mouse

The last 2 mouse events were unexpected. They should not happen.


Actual results:

The last 2 mouse events were unexpected. They should not happen, since it was a 'touch'.


Expected results:

Only the first 4 touch events should happen.

Comment 1

[Loic]

Botond, could you check his bug.

Comment 2

[Ming-Chou Shih [:stone]]

Test Firefox [1] on Windows10 and it works fine

[1] https://hg.mozilla.org/mozilla-central/rev/054d4856cea6