Configuring the "Compiler warnings per project" to a specific parser (here: self written parser), all projects/jobs are listed in the view, even if they have no parser configured.

In this case (see attached DashboardView.png), the entries "Total, High, Normal and Low" have dashes.

The next problem is that also jobs are listed which are configured with a different parser (not the selected/configured for this portlet), which is similar to bug "JENKINS-29730".

If the portlet is configured to "Hide zero warnings projects", all entries are gone, even the projects with warnings related to the selected parser.