I hope I can explain this correctly.
When in the NAKIVO Web Interface, I open windows like the 'Issues' window on a job. Then I want to move to the next job to check its' status. So I click on it to the left under 'Job Overview', but the Issues window is still open.
I have to manually click the cross in the top-right to close the Issues window first, then move back over to the left.
A lot of interfaces now support you clicking in the faded dark area behind the open window, and it closes the open window, taking you back to the main page you were just on.
The attached image may help to explain what I mean.