I have a similar issue that the server/instances window is empty, but I don't think you need to reload everything as I think its a problem with the server not announcing itself to the network (actually I think it times out as they are there when I first start the local client).  If you turn off 'advertise on local network' setting on the server (in preferences/general).  Then turn it back on they reappear in the server/instances window.    Not ideal solution but certainly faster than reloading a server instance.

Chris