[pgadmin-support] Query Tool: No rows shown for columns containing range types

[Franz-Josef.Faerber]

Windows 7
Installer postgresql-9.6.0-rc1-windows-x64.exe from EnterpriseDB
pgAdmin 4 , Version 1.0-rc1

If there is a column with type numrange or daterange, the Query Tool won't show 
any data (though the green bottom right tooltip box says "3 rows retrieved").