My Pack and Go Windows covers a lot of useless space

Hello,

 

Whenever I use the packngo feature the window that opens is quite big, however the useable space in that window that contains useful information is a tiny portion in the middle.

Screenshot:

The grey space at the bottom, in particular, is immense for no reason.

The only option I have at the moment is to stretch the window manually to give myself more useable space.

Even the list could at least extend to the right to the edge of the window, but it doesn't.

Is there a way to change this?

Thanks,

Emmet, Wajax