If you notice in the attached screenshot, all the way at the bottom of my roster is a list of people not even on my realm, or list of connected realms. Blackrock, Laughing Skull, etc. However, all of these people are people who had come from those realms and joined Frostwolf on Gorefiend.
It’s also worth noting that when those people talk in guild chat, those people keep the same name-server error. For example, Maiden actually pops up in guild as Mayden-LaughingSkull. This makes no sense.
For some reason, this has not been fixed, and this problem makes it very hard to see when people are actually online. While the new guild UI functionality is good, the reality is that the roster not updating is problematic, especially when looking to set up groups and see who’s online.