request: auto-scroll upon category expand

In regard to PortableApps Platform scrolling, I see two (tiny) problems:

1. Upon expanding a category, it should try to auto-scroll the menu to display as much of the category's contents as possible.
2. Clicking in scrollbar area, causes the menu to scroll-up-one-line or scroll-down-one-line.
   ...it should do a PAGE-UP or PAGE-DOWN.

P.S. ...can't wait for v12!