As per the spec, the ::part() pseudo-element can take additional pseudo-elements after it such as ::before (source: https://drafts.csswg.org/css-shadow-parts/#part).

Does this extend to vendor-prefixed pseudo-elements as well? The current behavior in Chrome and the latest Safari Tech Preview (96 as of writing) is that prefixed pseudo elements do not work with shadow parts.

Example: https://codepen.io/liamdebeasi/pen/jOOpQKa

I'm wondering if this is just a browser bug, or maybe a part of the spec that just needs clarification. Thanks!