1481500 - mouseleave shouldn't be fired but is fired on a shadow element when the mouse is moving from the shadow element to its included slotted element

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, defect)

Description

[張俊芝(ZHANG Junzhi)]

Attachment: testcase.html

Please see the testcase.html

mouseleave shouldn't be fired but is fired on a shadow element, when the mouse is moving from the shadow element to its included slotted element.

Chrome 70 works correctly in the test.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Thanks for the report. I can try to take a look at this, I agree it's unexpected for the mouseleave event to be fired in this case.

Comment 2

[Emilio Cobos Álvarez (:emilio)]

Attachment: Teach EnterLeaveDispatcher about the flattened tree.

We shouldn't fire mouseenter / leave based on the light tree, but the
flattened tree, the same way as the rest of the hover code works.

Comment 3

[Phabricator Automation]

Comment on attachment 8998241 [details]
Teach EnterLeaveDispatcher about the flattened tree.

Olli Pettay [:smaug] has approved the revision.

https://phabricator.services.mozilla.com/D2866

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/da8de7578878
Teach EnterLeaveDispatcher about the flattened tree. r=smaug

Comment 5

[Natalia Csoregi [:nataliaCs]]

https://hg.mozilla.org/mozilla-central/rev/da8de7578878