Traversal of slotted nodes can escape to real siblings. Those siblings are then traversed again as slotted nodes.
Created attachment 272781 [details]
Comment on attachment 272781 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=272781&action=review
> +var console = document.querySelector("#console");
Can we use some other variable name to avoid shadowing window.console?