Board Thread:Technical Updates/@comment-24006128-20200311154142/@comment-37336800-20200312181550

'nother bug three bugs:
 * Adding  causes the masthead and profile tabs to completely break (when on your user and activity pages) and nothing whatsoever to show up on your Message Wall page.
 * your Message Wall Greeting page isn't transcluded onto your Message Wall.
 * The Discussions activity feed doesn't work on UCP, it renders as plain text instead of creating the feed.

As an aside, User Talk no longer redirects to the Message Wall equivalent, even if Message Walls are enabled! Hopefully this stays the case.