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Why does scroll bar for up and down scrolling disappear?

Posted

Can't control up and down scrolling on pages or open window because the scroll bar or bars (located at right side on prior computers) disappears in using my new iMac Yosemite OS X 10.10.5 computer.

Can't control up and down scrolling on pages or open window because the scroll bar or bars (located at right side on prior computers) disappears in using my new iMac Yosemite OS X 10.10.5 computer.

Additional System Details

Installed Plug-ins

  • Provides information about the default web browser
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 18.0 r0

Application

  • Firefox 40.0.3
  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:40.0) Gecko/20100101 Firefox/40.0
  • Support URL: https://support.mozilla.org/1/firefox/40.0.3/Darwin/en-US/

Extensions

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription:
  • adapterDeviceID: 0x6819
  • 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: False
  • webglRenderer: ATI Technologies Inc. -- AMD Radeon R9 M290 OpenGL Engine
  • windowLayerManagerRemote: True
  • windowLayerManagerType: OpenGL

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
jscher2000
  • Top 10 Contributor
8687 solutions 71011 answers

Oops, your post duplicated. I replied here: https://support.mozilla.org/questions/1081306

Oops, your post duplicated. I replied here: https://support.mozilla.org/questions/1081306