Created attachment 316062 [details] HTML file reproducing inherit bug When an element has a style property set to `inherit`, the `inherit` doesn't appear to be applied if the parent element has a Shadow Root. Note that it's only if that property by default does is not `inherit` e.g. `border` whereas something like color is inherited fine. Other elements which match the same style selector rules seem to also break, even when their parent does not have a Shadow Root, however is fixed when re-applying styles (perhaps just triggering a redraw?)
Safari, Chrome, and Firefox all agree on rendering for this test case. I don't believe there is any remaining compatibility issue.