Backstage closes when popup is dismissed inside backstage

[bochelie1000]

I found an issue in the backstage. I have a print menu like ms word 2010. I use a combobox to select a print option. I open the combobox to select an item. Instead of selecting an item I click on the backstage background. At that very same moment the backstage closes. This happens in v4.0 as well as in 3.6.