Is there something going on with websites to bypass adblockers?

I've been seeing recently a lot of websites are rendering weirdly across Firefox and Chrome. It's like they have a wrapper overtop of the content that's almost like a virtual machine is running or something. These sites tend to not run very efficiently and adblockers and any other extensions/add-ons that modify the page do not work. I use uBlock Origin and when I use the zapper tool it just wants to zap the entire page which literally stops the entire thing from rendering. I've even noticed big sites like Facebook are using it. I can immediately tell if a site is doing it by right clicking. I've attached two photos, one is what a site looks like normally when I right click and the other is what happens on these sites. I'm also using a mac and it's showing the quick options as ctrl + <option> rather than command? Does anyone know what's going on here? Edit: Just adding more details, if I click the `Show isolation toolbar`, there is an extension button which has `PDF Viewer`, and says it's installed by my administrator.. To be fair this is a work laptop so maybe it's actually them, this just seems weird that it's only some websites. https://preview.redd.it/aldr2kvufuqd1.png?width=1378&format=png&auto=webp&s=aa4cfe59315a4d409d2935d4e8a4b3ae70cc2a30 https://preview.redd.it/jiycgkvufuqd1.png?width=598&format=png&auto=webp&s=ebfaa8a9fabaa7bf46aabcd0316515513ea10061 submitted by /u/Lkemb [link] [comments]