Confirmed. Works using Win IE

Starting in Safe Mode displays the share buttons.

It could be the work of one of your add-ons, or it could be Hardware Acceleration. How to disable Hardware Acceleration {web link}

Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)

In the Add-ons Manager, on the left, select Extensions. Disable a few add-ons, then Restart Firefox.

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All Of them.

If the problem continues, disable some more (restarting FF). Continue until the problem is gone. After, you know what group is causing the issue. Re-enable the last group ONE AT A TIME (restarting FF) until the problem returns.

Once you think you found the problem, disable that and re-enable all the others, then restart again. Let us know who the suspect is, detective.

Fred, thanks so much for your response. I found out that it wasn't FF hiding the buttons. It was Ghostery. I fixed it and now I can view them. Have a great weekend!!!

There are two version of the bar that shows the share buttons. One horizontal bar is at the bottom that shows the page in mobile view. There is another bar that shows at the left end for larger displays. For some reason the script that makes this left bar appear isn't working properly in soje cases and none of the bars is displayed. Content Blocking doesn't have effect (I do see the shield icon).

The share bar gets a .at4-hide class name to hide either of these toolbars.

• https://s7.addthis.com/static/layers.1a65b1df626b9b567918.js

If I zoom the page out and in then I can make either bars appear.

Thank you for your quick reply. I discovered that it wasn't a Firefox issue, but rather a Ghostery blocking issue that I finally solved.

Patzilla said

a Ghostery blocking issue that I finally solved.

That was very good work. Well done.