1347575 - Disabling acceleration in flash breaks flash settings dialog on live.nicovideo.jp

Status: RESOLVED WONTFIX

(Core Graveyard :: Plug-ins, defect, P4)

Description

[Jim Mathies [:jimm]]

Attachment: settings dialog.jpg

STR:

1) set dom.ipc.plugins.forcedirect.enabled to true
2) sign into http://live.nicovideo.jp/ and click on a live video thumbnail
3) right click on flash and select settings

See screenshot. The settings dialog is hard to read and it doesn't react to mouse input.

Comment 1

[Jim Mathies [:jimm]]

(In reply to Jim Mathies [:jimm] from comment #0)
> Created attachment 8847636 [details]
> settings dialog.jpg
> 
> STR:
> 
> 1) set dom.ipc.plugins.forcedirect.enabled to true

I had disabled flash acceleration through flash's settings dialog, that was the cause.

STR:

1) right click a flash player and select settings. disable acceleration and restart.
2) sign into http://live.nicovideo.jp/ and click on a live video thumbnail
3) right click on flash and select settings
(or)
3) click the gears icon on the lower right, the menu that pops up displays transparent

Comment 2

[Jim Mathies [:jimm]]

Note this web site requests wmode=direct, which might explain why turning flash acceleration off breaks some of the content. This is definitely a flash bug and hopefully corner case since most users don't fiddle with flash settings.

Comment 3

[Kohei Yoshino [:kohei]]

They're aware of the issue: http://blog.nicovideo.jp/niconews/28539.html

According to the users, since Firefox 55, not only the Flash settings but also comments beside videos will become white, like this: https://twitter.com/appie_11/status/901681643982733312

Comment 4

[Kohei Yoshino [:kohei]]

It's not a corner case as more and more people are now talking about this on Twitter. Looks like the acceleration is disabled by default on the player. Here's their blog post on how to enable it: http://blog.nicovideo.jp/niconews/ni039996.html

Comment 5

[Kohei Yoshino [:kohei]]

Someone tweeted yesterday how to solve the issue by flipping the async drawing pref in about:config
https://twitter.com/vipdeshosinsha/status/902137257615810560

Comment 6

[Kohei Yoshino [:kohei]]

For this site, people are reporting another issue when Flash hardware acceleration is *enabled*. The announcement text above the video will be misplaced if they switch to another Firefox tab and back to the video site's tab. I guess it's a painting bug Jim is already working on. Here are some screenshots:

https://twitter.com/tw9900/status/906113930514251777 - "FIVE STARS" is misplaced
https://twitter.com/maomao777/status/902009381373460480 - "延長アンケート" is misplaced

Comment 7

[Jim Mathies [:jimm]]

(In reply to Kohei Yoshino [:kohei] from comment #6)
> For this site, people are reporting another issue when Flash hardware
> acceleration is *enabled*. The announcement text above the video will be
> misplaced if they switch to another Firefox tab and back to the video site's
> tab. I guess it's a painting bug Jim is already working on. Here are some
> screenshots:
> 
> https://twitter.com/tw9900/status/906113930514251777 - "FIVE STARS" is
> misplaced
> https://twitter.com/maomao777/status/902009381373460480 - "延長アンケート" is
> misplaced

definitely looks related. FYI adobe is now looking at both the unaccelerated text render bug and the tab switch issue. So far we haven't found issues with firefox.

Comment 8

[Kohei Yoshino [:kohei]]

Glad to hear that.

Comment 9

[BMO Automation]

Resolving as wont fix, plugin support deprecated in Firefox 85.