Hello clay58, try Firefox Safe Mode to see if the problem goes away.

Firefox Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).

If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:

• Click the menu button , click Help and select Restart with Add-ons Disabled.

When the Firefox Safe Mode window appears, select "Start in Safe Mode".

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.

To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help others with the same problem.

thank you

Thanks ideato. Your solution worked. I did the Firefox safe mode and was able to post to social media. I rebooted Firefox and disabled all extensions. Then enable the extensions one at a time. Adblock Plus extension caused the problem. All other extensions I have are enable and I kept Adblock Plus disable. Every thing is working now:)