Steps to reproduce:
Create a new unversioned page and add PP report macro, in the macro’s parameters add "with parent" parameter select the same page,
create a child page with PP macro,
go back to the parent page and confirm that PP report shows one page,
convert the page with PP report to versioned
The PP report shows the page in the results list
The PP report shows no pages
Use only labels to identify which pages should be displayed in the report macros.
As the parent-child relationship is reinstated after publishing within Confluence, the macros will be operational in the public space.
Confluence 6.12.0, 6.12.1, 6.15.1