More ads with adblocker enabled than without

I am using firefox for iOS, v156.1 and have been very excited when I learned about the new, integrated adblocker function. I am using strict tracking protection and private tabs. Brave browser does a fantastic job to block ads, and I was expecting similar performance. However, when I enable the new adblocker function, I do get MORE instead of LESS ads...? Please try yourself, visit the site https://www.spiegel.de with and without adblocker, with tracking protection enabled and set to strict. With adblocker disabled, there is no ad shown, just black zones where ads have been blocked. With adblocker enabled, I get multiple ads displayed, quite annoyingly. Please help me understand if this is intended behavior, or if I am doing something wrong. Thank you very much Peter PS: Just found this discussion: https://connect.mozilla.org/t5/discussions/ios-ad-blocker-experiment/m-p/133902 Unfortunately I am not alone, and this is expected behavior, i.e. useless for me. I am very disappointed :(