/Topic.xhtml It would be useful if a topic could display a "render update pending" indicator on the preview tab. Basically so you know if you are still waiting (or your changes didn't actually fix the problem you thought they would).
Marking this as WONTFIX since the new GUI provides real-time XSL transformation and as such the renderer will be removed, making this RFE pointless. Also given the current code base, this isn't possible and we won't be adding it since it'll take a reasonable amount to implement for something that is going to disappear in the coming months.