Description of the issue: i am getting certain repeated banner ads on youtube
Exact URL of the website in question:https://m.youtube.com/
**Screenshot of the ad as it appears in Brave
Did the issue present with default Shields settings? (yes)
Does the site function as expected when Shields are turned off?
Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration. (yes/no):
Does the site work as expected when using Chrome?
Brave version (check