Did the patch today Jan 11 break guild display?

[Kozzae-doomhammer (Kozzae)]

Issue with Guild Chat Channels

We experienced an issue today that affected guilds’ chat channels. As a result of this, we have lost all guild chat history and custom channels for guilds that had members log in for a portion of today. Other aspects of guilds, like the bank and roster, are unaffected. We are actively investigating the matter and will update you if anything changes. Thank you for your patience.

You should still be able to see the guild by typing /groster