Parts List 0.82, can't sort by Storage Location

[Addy771]

Please see this image that shows how I have set up some parts:

I currently have the list sorted by Stock which works fine. Clicking on Storage Location and selecting Sort Ascending or Sort Descending has no effect, the list remains sorted by Stock as shown. The same issue occurs with the Footprint column

[Addy771]

Here is the structure of my storage locations: