Cannot set initial-pool-size attribute of datasource from web console

Run Wildfly in domain mode Navigate to existing datasource, e.g.: Configuration -> Profiles -> full-ha -> Non-XA -> ExampleDS and click on View Switch to Pool tab Click on Edit Set value of Initial Pool Size labeled field to valid value (e.g. 5) Click on Save button Success message appears and everything looks OK, but when I try to read value by CLI command only response which I get is: [domain@localhost:9990 /] /profile=full-ha/subsystem=datasources/data-source=ExampleDS:read-attribute(name=initial-pool-size) { "outcome" => "success" , "result" => undefined } and it should be: { "outcome" => "success" , "result" => 5 }