Comment 2 for bug 1084474

Could you please attach a screenshot?
By default it's not possible to use the screenshot hotkey while a menu is open, but you can use the following method:
1. open a terminal
2. open synaptic
3. run 'gnome-screenshot -d 5' from the terminal, and you have 5 seconds to go to synaptic and open the menu
4. save the screenshot and crop as required
Thank you in advance!