We are having a big problem with Chats for our students who have had a Display Name change. Chats uses the Full Name instead of Display Name. I searched and found the following from this Canvas Guides page:
Full Name is used for the Gradebook and Grades pages, Chat, People, and SIS imports.
Display Name is how other users will see your name in Announcements, Conferences, Conversations, and Discussion
It is bizarre that Chat is included in the Full Name and not Display Name function. Please fix this ASAP