There is an annoyance issue when steaming Hulu content with Brave. When I stream Hulu content it will show a grey box on the screen with my email address over the top of the content. It’s almost always an advertisement that causes this. Right clicking gets rid of it, but it may come back the during the next ad break. USUALLY the box goes away when the actual content plays.
I am running the latest updates on Windows 10.0.16299, the latest final release of Brave (has occurred in previous versions).
I am not aware of any settings in Brave that would have any effect on this issue. The issue can be reproduced by simply playing content that has ads on Hulu.