Just a display bug. If you add an adventurer to your party and rename him and then remove him from your party his name will return to the name he had before the namechange when displayed in the "rooster". If you leave the tavern and reenter the name is changed to reflect the change. Steps to reproduce: 1. Add a member to your party 2. Rename this member to "ROAR", note the original name 3. Remove the member from the party and try to find "ROAR" in your rooster, he will not be present but the original name will be. 4. Exit and enter the tavern, the hero will now be named "ROAR"
That's interesting, I thought the char had to be active when you left the keep to save the change. But yes, leaving the keep is clearly the point where it saves.