When I try to create a new server (which can be used by PgAdmin3 with no problems), I get the error message:
"Error saving properties: GONE - 'ascii' codec can't encode character u'\xbb' in position 45: ordinal not in range(128)"
When I uncheck the box "Connect now?", I can save the new server, but when trying to use the new server, I get the message (at once): "Connection to the server has been lost."
So I cannot use the actual PgAdmin4. I had the same problem with earlier releases of PgAdmin4.
The databases I try to connect to are version 8.4. Is this the problem?