I am getting a print error when using secured layers after upgrading to 10.7.1 Enterprise. This patch says it solved this bug at 10.7, was this not included in the 10.7.1 roll out: https://support.esri.com/en/download/7694#bugs?
Maurice Wills, I was going to recommend you contact Support Services to look into this further but I see where you already have a case. I'm going to be keeping an eye on it from my side as well.