As described in https://en.wikipedia.org/wiki/Wikipedia:Page_Curation/Suggested_improvements#1._Page_curation_tool:_.27No_problems.27
In the "Page info" section of the toolbar, there is a subheading "Possible issues" which contains the text No problems have been found for this page so far. if there are no maintenance templates currently on the page.
This is misleading and has no apparent function. Either list the problems that have already been automatically identified and listed on the New Page Feed, or just remove from the Page Curation flyout entirely.