On problem sites, clicking a link causes... nothing to happen at all? I noticed on the add-ons list you shared that there are at least three directed at pop-ups:

• Popup Blocker (strict)
• Popup Blocker Ultimate
• PopUpOFF - Popup and overlay blocker

On the sites where you have problems, do those extensions give you a way to make an exception so you can test whether they are causing the problem? Their buttons might be on the Extensions button drop-down list: Manage your extensions using the extensions button in the toolbar.

By the way, you usually can override sites hiding the built-in context menu by holding down the Shift key while right-clicking.

I have Popup Blocker (strict) and Popup OFF. I have the first one set to ask what I want to do, but sometimes it doesn't. especially if I have to manually open in a new tab, or if the original site is redirecting to another site. I have the other set to "Delicate" so it isn't aggressive. I just got the Popup OFF to stop overlays and those annoying floating social site buttons some stupid websites still have. The annoying thing about it is that it sometimes won't block the overlays and I have to use the "reader view" to do that, and that is annoying when I want to see the images. Thanks for the tip on the tip on the override. Didn't know that.