Getting warning "Custom widget with id loop-button does not return a valid node" when trying to start Firefox 38.

Solution Unverified - Updated -

Issue

  • Just patched a RHEL6 system and now getting the following warning when starting firefox:

     console.error:
   [CustomizableUI]
 Custom widget with id loop-button does not return a valid node
 console.error:
   [CustomizableUI]
 Custom widget with id loop-button does not return a valid node

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • Firefox 38

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