UI not interactible with multiple displays after upgrading to 5.5

Hello,

I have a scene where I have a VR camera rig which is "display 1" and another camera which can be used to follow and look at the camera rig on "display 2".

I had a UI which allowed a user to change the VR users environment etc which was on display 2 and not visible to display 1. I upgraded to 5.5 just yesterday and have not been able to get the UI to start working again. in fact display 2 will not even appear in a standalone windows build on the second screen.

             if (!_hasActivatedScreens)
             {
                 Debug.Log("displays connected: " + Display.displays.Length);
 
                 if (Display.displays.Length > 1)
                     Display.displays[1].Activate();
                 if (Display.displays.Length > 2)
                 {
                     Display.displays[2].Activate();
                 }
                 _hasActivatedScreens = true;
             }

Above is the code for activating the second screen or third if necessary.

Any help would be appreciated.

Cheers