Loss of connection when making configuration changes


We are using Free LoadMaster version deployed from an OVF template on our VSphere 6.5 environment.

It operates fine with the exception that whenever we make a configuration change, for example adding a Real Server or a Content Rule, the management IP address stops responding to ping for around 30 seconds. When connectivity comes back up the change has been committed and we can carry on configuring. Any Virtual IP address's stay up but the management connection drops for every change we make. Is this expected behaviour?