With the shields enabled profile pictures of other users are simply gone.
With the shields disabled (and logged in in Facebook), there is a facebook iframe that keeps loading forever, and makes the tab to be stuck right on top of it because it reloads very fast and focus the browser on it. Reloading doesn’t get you out of the loop so to get out you need to open a new tab.
The page does have ads but I have a membership kind of deal with the page, so while I’m logged in, my account doesn’t get to see ads.
version of Brave Dev: Version 0.58.9 Chromium: 71.0.3578.53 (Official Build) dev (64-bit)