Element subtree: significant text beside a third-party image. EasyList ###navAdBanner (un-hideable tier) matches a banner holding an image from test-adblock.org (a different registrable domain) and a sentence of at least 30 characters and 5 words. Brave's un-hide condition is isSubTreeFirstParty || showsSignificantText (content_cosmetic.ts:666-677), so the text un-hides it even with the third-party image. Compare cosmetic-id-adbanner-3p: same image, label “Ad”, stays hidden.
Expected: Standard hidden, then visible; Aggressive hidden.
Expectations are Brave's verdicts, stated in pages/cosmetic-fixtures.json (ENG-2306); until Brave is measured they are hypotheses. The status line mirrors the Standard expectation.