Remote Shadow Disconnects When WMS Logs Off

We have WMS set to log out out after 30 minutes of inactivity.

Since we upgraded to WMS 1.4.1 325, logging out of WMS also causes remote shadow connections to thin clients to disconnect as well. This did not occur with 1.4.42077. It is a minor inconvenience for the remote shadow to disconnect in the middle of a session.

Is this a feature or a bug? Is there a way to keep the remote shadow connection alive without having to switch to another VNC application or having to log back into WMS?