The legacy Page Info macro supported an @SELF reference to the current page but this is no longer supported within the current implementation of this macro. The documented method of referring to the current page is with the $self syntax.
The following storage format displays how an example of a valid macro within the legacy version of the Page Info macro:
As with the linked ticket, this issue prevents the macro from rendering as expected.
Until a bugfix is released for this, customers can work around this issue by creating a new instance of the macro in the current plugin with the same parameters and deleting the old.