HI, You do have some video driver error, most of it from being disabled as a preference. featureLog: {u'fallbacks': [], u'features': [{u'status': '''u'disabled'''', u'description': u'Compositing', u'log': [{u'status': u'available', u'type': u'default'}, {u'status': '''u'disabled'''', u'message': '''u'Disabled'''''' by pref', u'type': u'user''''}], u'name': u'HW_COMPOSITING'}, {u'status': '''u'unavailable'''', u'description':''' u'OpenGL Compositing'''', u'log': [{u'status': '''u'unavailable'''', u'message': '''u'Hardware compositing is disabled', u'type': u'default'}'''], Figure out why you have turned off most of your video card. Try : SAFE MODE *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes In Firefox Safe mode these changes are effective: *all extensions are disabled (about:addons) *default theme is used (no persona) *userChrome.css and userContent.css are ignored (chrome folder) *default toolbar layout is used (file: localstore-safe.rdf) *Javascript JIT compilers are disabled (prefs: javascript.options.*jit) *hardware acceleration is disabled (Options > Performance > Uncheck to view) *plugins are not affected *preferences are not affected TEST'''''''''is issue still there ?

Thanks @Pkshadow. I just refreshed my FireFox. Its working fine and everything got perfectly right. Cheers...