1698988 - Intermittent elements with transform-style: preserve-3d when animated

Status: NEW

(Core :: Graphics, defect, P3)

Description

[carlosdario.me]

Attachment: screenshot.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0

Steps to reproduce:

In the webpage https://www.cubemos.com/culture if you go to the second section, the one that has 3 elements that say "create", "trust" and "ownership", the elements do an animation when hovered, if you hover over them horizontally from one another, they start disappearing and reappearing again and again.

What is even weirder is that if you make them disappear and go to the inspector and find the element and click or hover the element IN the HTML element tree, they reappear.

The problem seems to be the "transform-style: preserve-3d" property, since if I disable it the bug goes away.

Actual results:

Hovered over elements that had an animation in a webpage and they disappeared.

Expected results:

They should just do the animation and not disappear.

Comment 1

[Alin Ilea, Desktop QA]

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0

Hi,

I have managed to reproduce it on Release version 86, Beta 87.0b9 and latest Nightly 88.0a1 (2021-03-17) using Windows 10.
Further, I will move this over to a component so developers can take a look over it. If this is not the correct component please feel free to change it to an appropriate one.
The issue is not reproducible on Chrome.

Thanks for your input.

Comment 2

[Emilio Cobos Álvarez (:emilio)]

Thanks for reporting.

Can you attach your about:support information? I don't see it on latest nightly, but I'm on Linux. This is likely a graphics issue from the description above.

Comment 3

[Timothy Nikkel (:tnikkel)]

I can reproduce on mac and the original reporter seems to be on windows, so probably not very machine specific.

Comment 4

[Timothy Nikkel (:tnikkel)]

Reproduces with wr and without wr. Same regression range

https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=d2a4d549f9955412471054a5f5f92f7f1ad160a2&tochange=99d782b09b7d036db2596201c7dae8baf06de85e

I think probably bug 779598

Comment 5

[Brad Werth [:bradwerth]]

Boris, would you please take a look?

Comment 6

[carlosdario.me]

Attachment: about:support

Comment 7

[Boris Chiou [:boris]]

Still have no time to check this bug, but I can reproduce this locally. Assign to myself for now.

Comment 9

[Mayank Bansal]

Attachment: Standalone testcase from bug 1789053.html