I have a user who is trying to use the Children Display macro in Confluence cloud.
It looks there is a new feature where editing macro options now appear on a right-panel, but that's not the issue. For Children Display he can't seem to reference the parent page - he gets "Unable to Render" even though he has the correct page name.
...And a previous page with Children Display still works (looks like prefixed with the space code), but if you edit and save that page, the children display disappears.

Removing the colon ( <b>:</b>) on the parent page's title fixes this. Now he sees related pages (using Children Display) on child pages
Here's another test page he created in order to show the error:

Is there a bug report on this already? If so I have yet to find it. Thanks