Business Desktop has already been started for this workstation every time we start Sage 100 2018

We have been using Sage since 2012; we started with MAS90 4.5.  Starting with Sage 100c 2018 it seems that a pvxwin32 is left running on the workstation and on the server for every session we start.  Every morning when we open the Launcher we get told that a Business Desktop has already been started on this workstation.  If we go into task manager on the workstation we will find an instance of pvxwin32 running.  If we kill the task we can then start the launcher.

When installing 2018.4 recently I discovered that an instance of pvxwin32 was left running on the server for each workstation session.  We regularly use 4 workstations and they all do it.  One is Windows 10 x64 1803, two are Windows 10 x32 1803, and one is Windows 7 x64 Ultimate.  The server is Windows Server 2008 R2.

What could be causing this?  How do I fix it?