Yang UI - Post request executed with the same data from History tab and from Form does not execute equally

1. Yang UI -> API tree -> expand network-topology rev.2013-10-21 -> expand config -> click network-topology to load network-topology button in form.
2 Click arrow expander in front of network/topology button in form to load topology list button.
3. Click topology list + button to add new topology id.
4. Make sure no topology exists with key "t0". Input "t0" topology id to topology-id input field and execute POST operation.
5. Navigate to History tab. There is a record of PUT method, on http://localhost:8181/restconf/config/network-topology:network-topology url, status success and sent data button enabled.
6. Fill the same data to the form and execute POST operation again. There is a record of PUT method, on http://localhost:8181/restconf/config/network-topology:network-topology url, status error and sent data button enabled.
7. Run the original request by clicking on "run request button" in History tab.
8. Buggy behaviour: When you run the original POST request by clicking on "Run request" button, the record with Disabled Sent button is added to History table.