Greetings,
I love the browser, it is working very well in general and the Ad Shield works very well except that now many websites is starting to detect it and are forcing it to be turned off.
Websites like https://kisscartoon.is are able to detect the Ad Shield and request it to be turned off, for example. If they can detect and force a message onto your screen than many others will start doing the same.
I think Brave devs should look into this.