WebExtension in Firefox get access to open and closed shadow roots: https://developer.mozilla.org/en-US/docs/Web/API/Element/openOrClosedShadowRoot https://deve

WebExtension in Firefox get access to open and closed shadow roots: https://developer.mozilla.org/en-US/docs/Web/API/Element/openOrClosedShadowRoot https://developer.mozilla.org/en-US/docs/Web/API/Element/ope.... I think there are open bugs for some further improvements.