Did the issue present with default Shields settings?
Default states are:
Block: Ads/Trackers, 3rd Party Cookies, Allow: Encrypt Connections (HTTPS), Scripts, 3rd Party Fingerprinting
Where and how do the ads appear? (fill out below)
Banner (might be 1st party) on top of the page and multiple ads across the page from yandex.direct ad network
URL where ad was displayed:
Screenshot of ad as it appears on the webpage:
What Brave version/Build are you using? (About Brave)