1825949 - Earlier pointerenter events have later timesTamp than later pointermove events.

Status: UNCONFIRMED

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

Description

[isonon]

Attachment: pointerevent_timestamp.html

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0

Steps to reproduce:

1. Add pointerenter and pointermove EventListeners to element.
2. Move the mouse over the element.

Actual results:

pointerenter event has a later timeStamp than a later pointermove event.

Expected results:

pointerenter event has a ealier timeStamp than a later pointermove event.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::DOM: UI Events & Focus Handling' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Indeed, at least enter event should have same or later timestamp of the source event for conforming to the meaning. However, we just create another instance without maintaining the timestamp.
https://searchfox.org/mozilla-central/rev/98397ff4eac3d32b815fbb33bff147297fb972d7/dom/events/EventStateManager.cpp#4413-4418,4422-4424,4426-4433

Smaug, what do you think? (At least, UI Events does not define timestamp about mouseenter etc.)

Comment 3

[Olli Pettay [:smaug][[e-mail]]]

We could just copy the timestamp from the *move event when generating enter/leave