Seeing the same thing in Firefox.
This is how it looks in Brave browser.
This is the "Ad Injection" topic that came up a bunch last week. Everyone was screeming "Baker comped, put a tracking script up in the dough".
Claims being used to track anons.
Others said it was a java glitch with ad placement in the html and can happen.
Dunno what to believe, but first time I saw it is right now, but knew right away what it was (e.g. same issue as raised last week).