1221959 - Some sites that use Flash Player don't work correctly on the 64-bit version of Firefox

Status: RESOLVED INVALID

(Core Graveyard :: Plug-ins, defect)

Description

[bugreporter]

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:42.0) Gecko/20100101 Firefox/42.0
Build ID: 20151029151421

Steps to reproduce:

I installed a fresh copy of Windows and I'm using the latest stable 64bit version of Firefox (42.0) and the latest stable version of Adobe Flash Player (19.0.0.226).
I noticed Flash Player issues on some sites. 
I even disabled my Firefox extensions but it didn't help. 
Notice that these problems don't occur on the 32-bit version of Firefox (latest stable version installed on my second PC).


Actual results:

On the site haxball.com:
- You see a grey background (http://s12.postimg.org/sapdlin4d/badhaxball.jpg). I also disabled hardware acceleration but it didn't help
- You can't open the Developer Toolbar by pressing Shift + F2 (I was trying to take a screenshot, it didn't work, so I used Windows Snipping Tool)

On the site stream2watch.co:
- You can't switch to HD and the volume slider is set to minimum (http://s16.postimg.org/tlllvqlmd/stream.jpg)

On some adult sites: 
- You can't watch the videos and live cams because of the white background

On the site miniclip.com:
- If you play the game called Soccer Stars, sometimes you have to reload the page because the game hangs up.


Expected results:

On the site haxball.com:
- You should see a box to enter your nick (http://s11.postimg.org/aumfo23ib/goodhaxball.png)

On the site stream2watch.co:
- You should watch the stream with no audio, but you actually can hear the audio

Comment 1

[bugreporter]

I wrote I installed a fresh copy of windows, but I was also using CCleaner and some registry cleaners, so that's why these described here issues are my fault. Sorry!