I have a report with several buttons:

Each button opens av new report with OpenUrl and perma-link with the New Window parameter. When I push the forst button "Leveranser", it opens the new window in a new tab. If I go back to the tab with the above report and push "Avhengigheter", it opens the new window in the same tab as "Leveranser" and the focus is not changed to the other tab.  When I am signed in and use OpenUrl without permalinks, it works fine. New window then always opens in a new tab. Why is this different when using perma-link to open the new window?