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Its still working. Thanks.
No, it doesn't reoccur after update to OS 10.15. But I can't recommend an update to Catalina at the moment due to some issues like WLAN...
My problems disapeared after update to version 15. OS version is 10.14.6 and will be updated this night.
It worked for me just with the extra options window which has to be activated in the printers configuration of Parallels.
You will now...