Fences - scrolling with vertical fences issue?

First off, Fences seems to be a great program - I just downloaded the first public beta.

The only issue I seem to be having with it is when grouping desktop icons in a one icon width verticially , it does not create scrollbars properly as needed.

Heres an example: I create a fence around 4 objects total - 2 are icons and 2 are shortcuts.

I resize the fence verticially to show only two of the objects on top of each other.

In this case, no scroll bar appears to the right - even though there are two more objects hidden in the fence.

THis occurrs if the objects are either all icons or schortcuts or mixed.

Thanks