Resizing a selection in Adobe Acrobat X Pro

Question

When working with block selections, you can resize the area by dragging the handles on each of the four corners. However, I can't seem to find a way to resize the area by dragging a single side of the rectangle. If Acrobat lacks this feature, I will be surprised.

Example:

MS Paint vs Adobe Acrobat.

Workaround:

I am currently using Mouse Keys (Control Panel\Ease of Access...) to move one axis at a time when dragging a corner. It works, but it is less than ideal.

Answer 1

I've yet to find a way to change this. However, since asking this question, I've become accustomed to using Mouse Keys in my workflow. I suppose Adobe would mark this as status-bydesign.