I don't use OpenConnect on MacOS -- I'm using the real Pulse Secure software version 5.2.5 (869).
Before 18.04, it seemed that they worked identically well.
One thing I did not consider, but will be able to test for: all of these problem scenarios occurred connected to an iPhone via wireless in hotspot mode on iOS 12.1.x. I should compare this to my home setup (Optimum Online) to make sure it wasn't something in the iOS hotspot or on VZW that changed.
I don't use OpenConnect on MacOS -- I'm using the real Pulse Secure software version 5.2.5 (869).
Before 18.04, it seemed that they worked identically well.
One thing I did not consider, but will be able to test for: all of these problem scenarios occurred connected to an iPhone via wireless in hotspot mode on iOS 12.1.x. I should compare this to my home setup (Optimum Online) to make sure it wasn't something in the iOS hotspot or on VZW that changed.