window.getURL() in version 7.3.2

Good night,

I migrated my application from version 6.8.9 to 7.3.2 but I have a problem before (version: 6.8.9) to open a new tab in the browser:
Register in the Application and window.getURL ()
In version 7.3.2 every tab open in the browser it creates a new instance of the UI.

I tried to use the Navigator but also did not work, he opened a new tab but without displaying the layout.

How to do this in version 7.3.2?

Thank you for your attention.