Library filter metadata columns Location, Country, State/Province, and City should allow for sort order control

When filtering on location-related metadata in a library filter, the Location, Country, State / Province, and City columns do not allow for changing the sort order.

I've noticed that even though sort order control is not available on Location-related columns, the sort order seems to be affected by the residual sort order on the column.  For example...

• Click All Photographs in the Catalog panel
• Enable the Library Filter (CTRL + L or \ or Library > Enable Filters)
• Click Metadata to enable filtering on Metadata
• Click the drop-down menu at the right-side of a metadata column, and choose Add Column
• Change the metadata to filter in the new column to Location.
• Take note of the order in which Location values are sorted.
• Change the column to Date.
• Change the sort order from Ascending to Descending, or vice versa. (i.e.: the opposite of whatever it was).
• Change the column back to Location.
• Note that the order in which Location values are sorted is opposite to what it had been previously.

It would be nice to control the sort order of Location-related columns directly, without having to temporarily change the column to Date as a workaround.