JQL Functions Parameters not working

The function “issue in requirements” does not take parameter P/ into account:

1. issue in requirements ('OK|NOK','P906725.Kundenerlebnisportal','','','true','','R-App Epics in Herzstück')
2. issue in requirements ('OK|NOK','P906725.Kundenerlebnisportal','','','true','','R-App Stories in Herzstück')
3. issue in requirements ('OK|NOK','P906725.Kundenerlebnisportal','','','true','','Hampi JQL 1')

All 3 filters result in the same result set. The JQL checks if the parameter P7 is a correct saved filter, but in the examples 1. Should filter down to only Epics and 2. Should filter down to stories. The last one is a filter to just report 2 requirement issues.