Two instances of the same website with DesktopHTMLView

It seems that an app share the same cookies when you have two instances of DeskTopHTMLview on the same window. What to do if want each instance of DesktopHTMLView to have separate cookies and be to login with different accounts?

I doubt you can do that. Just as you can’t have two instances in Safari with separate users logged into different tabs. Try it in Safari and you should see the same problem.