At the question: Enter root password that will be used for the engine appliance (leave it empty to skip): the text input field doesn't mask the password.
This is just waiting for a merge
Test version: rhev-hypervisor7-ng-4.0-20160527.0 cockpit-ovirt-dashboard-0.10.1-0.0.1.el7ev.noarch Test steps: 1. Install rhev-hypervisor7-ng-4.0-20160527.0 2. Enter cockpit 3. Enter Hosted Engine page to start setup 4. Check the root password field Test result: 1. The root password is masked as "......" now. So this issue is fixed in cockpit-ovirt-dashboard-0.10.1-0.0.1.el7ev.noarch now.
oVirt 4.0.0 has been released, closing current release.