1646370 - Fission: Make mouseenter/mouseleave event be dispatched properly in nested oop iframe

Status: RESOLVED DUPLICATE of bug 1653949

(Core :: DOM: UI Events & Focus Handling, defect, P2)

Description

[Edgar Chen [:edgar]]

While working on bug 1635784, I found some bug of mouseenter/mouseleave on nested iframe cases, for example, a.com contains an iframe b.com that also contains an iframe c.com, if we switch tab or window via keyboard shortcut, enter/leave event would possibly not be dispatched properly in a certain process, depends on the mouse location.

We could also notice similar behavior in one-level nested, like https://phabricator.services.mozilla.com/D79387, but the situation is better, it just does not work properly in the first place, would be recovered as soon as the user moves the mouse.

Comment 1

[Edgar Chen [:edgar]]

Attachment: Bug 1646370 - Test to reproduce the bug;

Comment 2

[Edgar Chen [:edgar]]

https://treeherder.mozilla.org/#/jobs?repo=try&revision=79fdaf0b0ec25323c9a71f654ef299ad6109ad08

Comment 3

[Chris Peterson [:cpeterson]]

Hi Edgar, are you going to be working on this bug? Or do we need to find another engineer?

Tracking for Fission milestone M6c Nightly

Comment 4

[Edgar Chen [:edgar]]

(In reply to Chris Peterson [:cpeterson] from comment #3)

Hi Edgar, are you going to be working on this bug? Or do we need to find another engineer?

I am working on this bug.

Comment 5

[Edgar Chen [:edgar]]

Will fix this in bug 1653949.

Comment 6

[Chris Peterson [:cpeterson]]

(In reply to Edgar Chen [:edgar] (PTO from 07/25 to 08/02) from comment #5)

Will fix this in bug 1653949.

In that case, I will move this bug from Fission Nightly milestone M6c to M6b since bug 1653949 is tracked for M6b.