Originally Posted by Rollfast

Firefox has received TWO updates in the last week related to broken add-ons and themes and you should have 66.0.5 installed now.

If you don't have FF set to automatically update do so manually by clicking on the three lines (hamburger) icon and choosing Help and then About, which will trigger the updating (click the button to start it) and it will close and reopen the browser.

When you have problems like this it is often FF trying to tell you something, so heed it.

Originally Posted by mixteup

Firefox is up to date.
I think I fixed it - It was an ad blocker issue. Seems OK now, as I've already done a couple replies.
Thanks for looking.

Originally Posted by Rollfast

You probably needed to reload as it was affected by the FF glitch originally, no?