Their UX doesn't match the redesign, and they have awful experiences.

• Remove the save button from both sections, making them direct manipulation
• Use <Field> for inputs
• Fix deleting all aliases for a room should delete its canonical alias #8740
• Fix UX on setting room alias can be misleading #8640
• Fix Save button gives zero UI feedback when adding/removing aliases in RoomSettings #8783
• Fix Missing spacing in Settings > Room Addresses #8591
• Fix Room alias selector doesn't let you edit entries you just put in #8101
• Fix Placeholders for related groups and local aliases disappear when modifier keys are pressed #6341
• Fix Remove related community button shown to those who don't have permission #5634

Related issues:

• After setting displayname in User Settings and hitting Save, the Save button ungreys itself #8569
• Changing the canonical alias does not update the URL fragment #8867

Future improvements:

• Change RoomSettings so that the canonical alias is first-class #7372