Using the 'v' modifier never results in a different arrangement of items in inventory.

Use of the 'r' modifier works as expected for row targets.
Use of the 'r' modifier on a rectangular target does not produce a different arrangement of items in inventory.

Hopefully problem 'r' needs no example.
For problem 'v', see both the example below and "A1-C5v stuff" from the official documentation.
^{_{Note also: the bottom line in the documentation's example contains an error. It should read "block" (singular), not "blocks".}}

Minecraft Version: 1.10.2
Inventory Tweaks Version: 1.61-58-a1fd884

Items:
Torch x64, end rod, flint & steel

Rule:
A8-C9v utility

Expected result when doing sort:

Actual result: