What add-on is it?

Also, you should not still be running Firefox 4, as that version is subject to numerous publicly disclosed security vulnerabilities. Can you check your current version here:

Help > About Firefox

You can use the Check for Updates button to get current.

Thanks for your reply.

I'm running different versions of firefox on different computers. I'm aware of the upgrade procedures. Same issue in later versions as well.

The add-on is called "Print Preview Button 0.5" by sindre-wimberger which I obtained through the "Search Mozilla Support"

However, that's not really relevant - to bring this back to basics the same situation occurs if you do <File> <Print Preview> then print the document. The print preview screen remains until manually closed. Perhaps there is a setting in "about:config"? Does anyone know if this is so? There is an entry "print.whileinprintpreview" but not sure what setting does here. Suspect if set to "False" then you probably wouldn't be able to print from "Print Preview" screen.

Thanks.

You're right: Print Preview remains open until dismissed. As a person who is regularly using the Esc key to dismiss dialogs, I hadn't really noticed the extra step.

Based on a little search, this has been raised a couple of times over the years (at least 2 bugs filed) but the first one was immediately rejected and the second one hasn't attracted serious discussion since it was filed in 2006. I suspect there's no secret switch in the software to do this.

jscher2000, Thanks for your response and your time.