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YouTube videos in Google+ posts won't play in full screen

Posted

When I click on the full screen icon of a YouTube video in a Google+ post, the browser goes full screen but it doesn't display the video. Instead, it shows Google+ posts in 3 columns (on my 27" iMac running Firefox 43.0.3 on OS X 10.11.2). Also, the red, yellow and green dots in the top left corner of the browser are not accessible and the ESC key doesn't exit the full screen view. The only way I found to exit the full screen view is to quit Firefox and re-start it!

When I click on the full screen icon of a YouTube video in a Google+ post, the browser goes full screen but it doesn't display the video. Instead, it shows Google+ posts in 3 columns (on my 27" iMac running Firefox 43.0.3 on OS X 10.11.2). Also, the red, yellow and green dots in the top left corner of the browser are not accessible and the ESC key doesn't exit the full screen view. The only way I found to exit the full screen view is to quit Firefox and re-start it!

Additional System Details

Installed Plug-ins

  • Displays Java applet content, or a placeholder if Java is not installed.
  • Shockwave Flash 20.0 r0

Application

  • Firefox 43.0.3
  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:43.0) Gecko/20100101 Firefox/43.0
  • Support URL: https://support.mozilla.org/1/firefox/43.0.3/Darwin/en-US/

Extensions

  • 1Password 4.5.1 (onepassword4@agilebits.com)
  • Clear Console 1.11.1-signed (clearConsole@penzil.com)
  • Clearly 10.2.1.7.1-signed (readable@evernote.com)
  • Decentraleyes 1.2.2 (jid1-BoFifL9Vbdl2zQ@jetpack)
  • Downie Extension 1.0.3 (downie@charliemonroe.net)
  • Ecosia — The search engine that plants trees! 3.4.2 ({d04b0b40-3dab-4f0b-97a6-04ec3eddbfb0})
  • Evernote Web Clipper 6.1 ({E0B8C461-F8FB-49b4-8373-FE32E9252800})
  • feedly 16.0.528.1-signed (feedly@devhd)
  • Firebug 2.0.13 (firebug@software.joehewitt.com)
  • I don't care about cookies 2.5.1 (jid1-KKzOGWgsW3Ao4Q@jetpack)
  • JSONView 1.1.0 (jsonview@brh.numbera.com)
  • MeasureIt 0.4.14.1-signed ({75CEEE46-9B64-46f8-94BF-54012DE155F0})
  • Random Agent Spoofer 0.9.5.3 (jid1-AVgCeF1zoVzMjA@jetpack)
  • Self-Destructing Cookies 0.4.9 (jid0-9XfBwUWnvPx4wWsfBWMCm4Jj69E@jetpack)
  • Stylish 2.0.4 ({46551EC9-40F0-4e47-8E18-8E5CF550CFB8})
  • uBlock Origin 1.5.1 (uBlock0@raymondhill.net)
  • wallabag 1.2.1-signed (poche@gaulupeau.fr)
  • WikiWand: Wikipedia Modernized 3.1.1-signed (jid1-D7momAzRw417Ag@jetpack)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription:
  • adapterDeviceID: 0x944a
  • adapterDrivers:
  • adapterRAM:
  • adapterVendorID: 0x1002
  • driverDate:
  • driverVersion:
  • info: {u'AzureCanvasBackend': u'skia', u'AzureFallbackCanvasBackend': u'none', u'AzureContentBackend': u'quartz', u'AzureSkiaAccelerated': 0}
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • supportsHardwareH264: No;
  • webglRenderer: ATI Technologies Inc. -- ATI Radeon HD 4850 OpenGL Engine
  • windowLayerManagerRemote: True
  • windowLayerManagerType: OpenGL

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No

Question owner

UPDATE: I tried again and this time the colored spinning wheel appeared for about 5 seconds whilst the screen went completely black. I pressed the ESC key and Firefox appeared in full screen view with Google+ posts displayed in 3 columns. The OS X top menu bar was inaccessible and the red, yellow and green dots usually in the top left corner of the browser weren't accessible either. However, and this is what I wanted to check: I was able to exit full screen mode by selecting the full screen option after clicking on the far right menu icon in Firefox.

I still need to figure out why the videos don't play in full screen. I don't have any problems viewing videos in full screen directly from YouTube.com.

UPDATE: I tried again and this time the colored spinning wheel appeared for about 5 seconds whilst the screen went completely black. I pressed the ESC key and Firefox appeared in full screen view with Google+ posts displayed in 3 columns. The OS X top menu bar was inaccessible and the red, yellow and green dots usually in the top left corner of the browser weren't accessible either. However, and this is what I wanted to check: I was able to exit full screen mode by selecting the full screen option after clicking on the far right menu icon in Firefox. I still need to figure out why the videos don't play in full screen. I don't have any problems viewing videos in full screen directly from YouTube.com.