IE only. We have the following scenario. 1. Navigate to Parent page 2. Open popup 3. Then open a nested popup from the previous one 4. Close the last nested popup with a click action marked as "ClosesBrowser". This includes in the scenario both the Click step and Close popup step. If the close pop up step target URL is data driven, the close popup step will close all popups and you will be left in the parent page instead of closing only the nested popup.