Screenshot
A website can use
Element.prototype.getClientRects1 to check if theHTMLElementis hidden.Related to AdguardTeam/AdguardFilters#231525, AdguardTeam/AdguardFilters#231315 and List-KR/List-KR#1051
Footnotes
https://developer.mozilla.org/en-US/docs/Web/API/Element/getClientRects ↩