For some reason, and it started suddenly, when I now click onto something in Firefox/Waterfox, it will open the page in a new tab. I haven't added anything, installed anything, and up to about 10 minutes from this post, the problem wasn't there.
I have checked options and I have "open new windows in new tab instead" unticked.
Has anyone else come across this and if so how do I solve it? It is really annoying.