Hi, with your version of Flash being checked at the door sorta speak it says large volumes of the understanding of upkeep of a system.

Separate Security Issue, please update your Flash 29.0 r0 by removing it with this tool : https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html If you use it Reinstall with Flash Player Version: 30.0.0.154 Current Version https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, . . . .) Note: Other software is offered in the download. <Windows Only>

No idea what is going on as your question has been assigned a big number. You can follow the bug but do not post in the on going testing and comments as it is not your bug but others also. So no post please. https://bugzilla.redhat.com/show_bug.cgi?id=1489099

Thank you Pkshadow, but I don't use Flash player. It's WebGL canvas built by Unity3D.

You can check the Web Console for WebGL error messages.

• "3-bar" menu button or Tools -> Web Developer
• https://developer.mozilla.org/en-US/Tools/Web_Console

Thank you cor-el. I know I can see error messages. There are no errors. You can see it as well here https://inetball.com/game_video.asp The problem begins with the last FireFox update and not exists in other browsers, so it should be connected with the last FireFox update, not with the code.

When you're on that site (and the game has started, grey areas and all) have you tried this : Ctrl + Shift + J

McCoy said

When you're on that site (and the game has started, grey areas and all) have you tried this : Ctrl + Shift + J

Ctrl + Shift +  J opens the same web console as cor-el suggested to check. There are no errors which can lead to such a problem. The problem depend on the last FireFox update, cause the previous FireFox version worked fine.

Ctrl + Shift + J gives me this :