There have been some changes which may cause confusion, sorry for that.
never set a Performer Track to Input Monitor. You will hear the Performer at all times thru the VST Connect Monitor plugin which resides at the very end of the output chain. You can see it with the Control Room at the bottom of the Master Output.
Right, just never use monitoring on a Performer Track. You should always hear the Performer as said. You can drop in sample-accurately like you are used to at all times too, which is a unique feature. You can just not hear effects on the Studio side while recording.
We haven’t tested each and every plugin. We will look at those you mentioned, thanks for the hint. What is your OS Version?
These problems usually occur when the connection is shaky. If no mixer channels are shown, this can usually be fixed by re-opening the plugin editor (window). “Half-baked” settings of the Performer side are often an indication for a more or less slightly unstable connection (try to re-connect and see if that improves the situation). On the other hand as you don’t mention any audio problems this seems a bit odd.