1196240 - Loading webkinz.com in Firefox 40 with dom.ipc.plugins.asyncInit set to true causes a black screen to show and the browser hangs up for ~30 seconds

Status: RESOLVED INVALID

(Core Graveyard :: Plug-ins, defect)

Description

[Mike]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
Build ID: 20150817163452

Steps to reproduce:

Ensure dom.ipc.plugins.asyncInit is set to true

Log into webkinz.com (create a free account if necessary)

Observe the browser will hang for ~30 seconds and usually a black screen is shown

Eventually the black screen goes away and the site loads


Actual results:

A black screen is shown and the browser hangs for ~30 seconds


Expected results:

No black screen, no hanging

Comment 1

[Mike]

Attachment: black_screen.png

Comment 2

[(No longer employed by Mozilla) Aaron Klotz]

We should verify that this has been fixed in the next 41 beta.

Comment 3

[Petruta Horea [:phorea], Desktop Test Engineering]

I didn't reproduce the blank screen with Firefox 41 beta 2, the screen was white for a few seconds and them the game  loaded.
Using Firefox 41 beta 5, the game is directly loaded.

Could you please try with latest beta (https://ftp.mozilla.org/pub/mozilla.org/firefox/candidates/41.0b5-candidates/build1/) and let us know if the issue still occurs? Thank you!

Comment 4

[Mike]

I've tested this using the latest beta here:
https://ftp.mozilla.org/pub/mozilla.org/firefox/candidates/41.0b6-candidates/build1/win64/en-US/

The issues persists, since the dom.ipc.plugins.asyncInit setting is set to true.

Note that in the latest live patch (40.0.3) the setting has been changed to false, and everything is working fine, but it is broken in the latest beta of 41.

Comment 5

[Petruta Horea [:phorea], Desktop Test Engineering]

(In reply to Mike from comment #4)
> The issues persists, since the dom.ipc.plugins.asyncInit setting is set to
> true.

Bug 1194600 should fix this issue and the game should load properly even with the pref set to true.

I managed to reproduced it, but very hard as most of the times, the game area is white for just a few seconds and then the game loads fine.
Only in about 3 of more than 10 attempts I saw the black screen, confirming.

Comment 6

[(No longer employed by Mozilla) Aaron Klotz]

How long are you waiting once you see the black? I see the black screen but the Flash content eventually always loads. Note that when I see the black screen, it is taking up to 30 - 40 seconds before the content appears.

Comment 7

[Petruta Horea [:phorea], Desktop Test Engineering]

When I see the black screen, it takes around 25-30 seconds for me too until the game is loaded.

Comment 8

[Mike]

We have observed the same behaviour, the black screen will show, which locks up the browser for 30-40 seconds, and then eventually it will unlock and the Flash content will show.

The white screen shown for ~3 seconds is normal behaviour.

Comment 9

[(No longer employed by Mozilla) Aaron Klotz]

I think that black is some kind of hang on the compositor. I'm trying to narrow it down with the profiler.

Comment 10

[u597032]

This website no longer uses Flash.

Comment 11

[Mike]

webkinz.com does still use Flash primarily for gameplay, just not on the home page or login page.  Which was also the case when this ticket was first created.

Comment 12

[(No longer employed by Mozilla) Aaron Klotz]

Async plugin init is a defunct feature that no longer exists.

If there are still problems with Flash on this website then please open a new bug.