I use Firefox all the time and have never noticed that before on a right click when highlighting text.
I never cease to find things out in these forums,
Good luck with your search.
I am looking for an extension that will do the following.
I open an email. I am reading this and want to do a Google search on something in the email. I currently highlight the words, copy and paste them to Google. I am looking for something similar that Mozilla Firefox has. If I am reading a page, I highlight the words, then right click, I have the option to "search Google for"
Is there such an extension?