"Save Project Suite As..." Button only saves 1 of my projects.

Hello,

As per the title, when I try and save my whole project suite, it only saves one of my projects. 

I have two projects currently in my suite, "Gantt Test Suite" and "Spry Test Suite". When I select the "Save Project Suite As.." button, it only saves my "Gantt Test Suite" project

See attached GIF for example.

I am able to use the "Save project as.." button to save the individual projects but I'd prefer to save the suite as a whole.