Non-functional, physically not existing printers listed; reappears after deletion

Fedora 31, g-c-c 3.34.2

I have an HP Color LaserJet 254nw which correctly appears in the g-c-c printer list, after being connected to the pc (e.g. printer and pc are in same network).
But besides that, there is always another printer with has nearly the same name but an additional weird number as a suffix:

The same printer does not show up in hplip or the cups web interface:

This additional printer is completely useless, as it does not work at all (it can not print, has no printing options...) and always reappears after some time when you delete it from g-c-c.