The Dashboard Refresh button doesn't work

So it seems the “refresh” button  (two circly arrows under the “Sessions” tab button) doesn’t work.  I have to disconnect and reconnect to the database to see what the sessions are currently.  Although PgAdmin4 has never seemed to refresh automatically like PgAdmin3 did, I vaguely recall the “refresh” button working before. Is this a known problem, or something that could be related to the configuration?  If it’s not a known problem, I’ll poke around in other clients and servers to try to find a situation in which the refresh button works.