Importing jobs doenst do anything since version 1.3

Just upgraded job import plugin to version 1.3
I can enter a Remote Jenkins url and a user and password.
Password seems masked since version 1.3 (which is a good thing).
Clicking on Query just returns an empty screen (cleared input) but doesnt present anything.

Downgraded to version 1.2, entered the same input and everything works fine.

Jenkins version 1.625.3