1600702 - Main process pages do not render correctly after app is paused/resumed

Status: RESOLVED DUPLICATE of bug 1581868

(GeckoView :: General, defect, P1)

Description

[Christian Sadilek [:csadilek]]

STR:

• Open any extension page e.g. a browser action default popup
• Put app in the background
• Put app in the foreground

Expected:

• Extension page is still being rendered

Actual:

• Seeing white / black screen

This only happens for extension pages, and seems to work fine the first time, but fails on subsequent attempts.

Comment 1

[[ex-Mozilla] Agi Sferro | :agi]

I can reproduce this consistently on Reference Browser with about:support, so this is for every main process page, not just extension pages.

It only reproduces for me when I have WebRender on, turning off WebRender fixes it. Christian could you double check that the problem goes away without WebRender for you too?

Comment 2

[Christian Sadilek [:csadilek]]

Unfortunately, I can reproduce this without WebRender as well. It is turned off for me (all gfx.webrender flags in about:config are set to false) and I still see this behaviour.

Comment 3

[Christian Sadilek [:csadilek]]

Update: I was wrong. After setting gfx.webrender.force-disabled=true, I can no longer reproduce the problem.

Comment 4

[Emily Toop (:fluffyemily)]

Kris, this issue is only appearing when Web Render is enabled. Can you take a look please?

Comment 5

[Kris Taeleman (:ktaeleman)]

This should be fixed by bug 1581868. Please re-open if still happening after this fix has landed.