So when you click Edit on a post, and then the More options button, I get this image: What happened to the theme?
It just happens on my post which is linked to the RM resource (and with thread prefixes). If that matters. I tested with some other posts, and it worked normally there.I've seen that reported on the xenforo forums before, something blocks the css from loading. Try on the default style to see if you can replicate it.