Description of the issue:
First of all I know Brave Browser version 1.47.186 is an old and outdated version. I have another PC with Windows 11 with the latest build of Brave installed, of course. But for my other PC with Windows 7 shields were working relatively well untill today 06/03/2025 I wonder why this old and outdated version was working fine untill now 06/03/2025 for me 
Exact URL of the website in question:
Screenshot of the ad as it appears in Brave:
Well, everybody knows how YouTube adds looks, right?
Did the issue present with default Shields settings? (yes/no)
yes
Does the site function as expected when Shields are turned off?
the same case…
Does the ad appear when using a Private window as well? (yes/no)
Yes
What OS are you using when you see the ad?
Windows 7 Professional fully updated (Untill January 2020)
Brave version (check About Brave):[(https://brave.com/latest/)]
Version 1.47.186 Chromium: 109.0.5414.119 (Build oficial) (64 bits)