I did some more testing. The bug is worse for permalinks that inhabit the same namespace as categories (e.g. “c/lounge”). If you make a permalink that doesn’t inhabit any special namespace (e.g. one with the URL “permalink1”), you get the standard broken “Oops! That page doesn’t exist or is private.” when you left click on it in a forum post. cc @eviltrout
By the way, the non-special route permalinks being broken is another example of a bug that would be fixed by my PR that causes a server-side refresh on an unknown route: