Even for an open space where the core ad was removed? I didn't check so I'm not sure there. I looked up what Firefox uses for its privacy settings, and it seems it's the Disconnect list--same as Microsoft Edge. So it would not be surprising if the same result of an ad's appearance on that site would happen if you disabled the Strict setting in Privacy in Edge. But again, didn't double-check that, just surmising. Honestly? The line differentiating the various mainstream browsers seems to be getting thinner all the time. I'm concerned Manifest v. 3 is going to flatten things even further.