I have two columns that don't appear to be sorting correctly. 

The first (and most serious) is my quantity column. When scrolling through the table, or clicking the column name, the numbers appear to only be sorting within their place (All numbers that start with 1, numbers starting with 2, etc) and this appears within groups

This screenshot might help a bit:

The second is the price column. No matter what changes I make to the sort order and direction, I simply can not click the column name to sort by lowest-highest price (or any other sorting for that matter, clicking does nothing)