I’m running pgAdmin4 v3.0 and I’ve put
localhost as host name.
left panel > servers > create > server and then
connection tab > host name
I could not query tables, clicking on
view/edit data >
all rows had no results (nor error log entries).
After I changed server name from
127.0.0.1, all worked as expected!
I hope it helps, because I’ve lost so much time on this and could not find a proper answer.