hmmm, https://www.posta.hr/pretrazivanje-postanskih-ureda?uredi=936 claims there is postoffice at Krasa 8, 52204 LIŽNJAN (LISIGNANO) 

should check if maybe address is wrongly mapped? 

ad crossreference with https://www.hpb.hr/hr/hpb-mreza/2752 