I visited Facebook and got two of the question banners from Brave, at the top of the browser window. See this screenshot:
Notice the ordering of the buttons: Deny/Allow on the bottom row, Allow/Deny on the top row.
Not really a bug, but a UI cleanliness/professionalism issue.
Thanks for looking at this!
OS Release: 17.6.0
Update Channel: Release
OS Architecture: x64
OS Platform: macOS
Brave Sync: v1.4.2