product display order error?

If I have products that are a member of more than one category, it appears that the display order that I set in
Admin>Catalog>Categories > Products tab > Display Order for a specific category, does not take effect.
I noticed it in 2.00 and it still happens in 2.10.
I checked dbo.Product_Category_Mapping, Product & Category tables to make sure the Ids matched up with the Product & Category Tables.  Also tried rebuilding the indexes for these tables, but no luck.
If I change these products to be a member of only one category, then the ordering works great.

Am I missing / misunderstanding something? Thanks for your help.

This bug is already fixed and will be available in v2.20. See changeset f3e431929a46

Sorry, I missed that changeset entry.
Thanks very much.