1556106 - Flashing page on reddit

Status: NEW

(Core :: Graphics: WebRender, defect, P3)

Description

[Asif Youssuff]

Attachment: about-support

User reports: Sometimes reddit(or other sites) content will disappear, becomes a white page and the browser proceeds to flash like some rave party. After reloading the affected page, the issue is gone.

https://www.reddit.com/r/firefox/comments/bva4pt/reddit_flashing_new_pages_not_loading_sometimes/

about:support attached

Comment 1

[Jessie [:jbonisteel] pls NI]

Andrew, can you help see if you can reproduce this on Monday?

Comment 2

[Jessie [:jbonisteel] pls NI]

Actually, I will see if Sotaro can take a look at this Monday his time :)

Comment 3

[Sotaro Ikeda [:sotaro]]

OK, I take a look it the bug is reproducible.

Comment 4

[Sotaro Ikeda [:sotaro]]

Bug 1555544 caused heavy flickering of WebGL background during removing and adding the canvas node every frame. But normal reddit page did not have such background.

Comment 5

[Sotaro Ikeda [:sotaro]]

(In reply to Sotaro Ikeda [:sotaro] from comment #3)

OK, I take a look it the bug is reproducible.

Hmm, I could not reproduce the problem.

Comment 6

[Sotaro Ikeda [:sotaro]]

Bug 1556340 might be related to the problem, though I could not reproduce the problem.

Comment 7

[Jessie [:jbonisteel] pls NI]

Hey Dan - I see you were able to reproduce Bug 1555544 - can you take a quick peak to see if you can reproduce the issue described here too? Trying to determine how big of an issue it really is. Thank you!

Comment 8

[Glenn Watson [:gw]]

I wonder if this line from about:support might be relevant?

Target Frame Rate: 144

Is it possible that might be breaking some assumptions in the Gecko / WR integration? Or perhaps be relevant to reproducing the issue?

Comment 9

[Jeff Muizelaar [:jrmuizel]]

From reddit: "It is not reproducable, and it only happens roughly once a day. It is very random, sadly."

Comment 10

[u480271]

(In reply to Jessie [:jbonisteel] plz needinfo from comment #7)

Hey Dan - I see you were able to reproduce Bug 1555544 - can you take a quick peak to see if you can reproduce the issue described here too? Trying to determine how big of an issue it really is. Thank you!

I was unable to reproduce the flashing rave party on reddit.com. My whole laptop did lockup though. Unclear if that's related, or not.

Comment 11

[Jessie [:jbonisteel] pls NI]

Marking this is P3 for now since we can't reproduce and the reporter on Reddit also says it happens inconsistently. Will re-evaluate priority if that changes.

Comment 12

[Julien Cristau [:jcristau]]

Not tracking for now.

Comment 13

[Jeff Muizelaar [:jrmuizel]]

We don't have a clear way to make progress here. Unblocking.