I noticed ads are not being blocked on coinmarketcap.com. I’m using a Google pixel. This has happened before, and it usually would block them again, after I had completely closed all tabs and restarted the browser.
This time however I closed all tabs, restarted the browser and it didn’t block all the ads. I even restarted the phone and still the ads can be seen.
I think there’s a bug in the Android version of the browser. I have attached a screenshot. Please let me know if you need anything further. I let the browser stay Idle (in the background) for prolonged periods of time. Maybe more than a month with tabs open, running in the background.