FWIW, at least another user seemed to be having the same (or a similar) problem with hplip 3.18.7 that went away using v. 3.18.6: https://askubuntu.com/questions/1070450/hplip-hp-device-manager-print-job-has-completed-but-nothing-happens-hp-la/1072536#1072536
FWIW, at least another user seemed to be having the same (or a similar) problem with hplip 3.18.7 that went away using v. 3.18.6: https:/ /askubuntu. com/questions/ 1070450/ hplip-hp- device- manager- print-job- has-completed- but-nothing- happens- hp-la/1072536# 1072536