Created Unassigned: Property Order and Category Order [19844]

1. about the Property Order
I know the [PropertyOrder()] attribute is used to specify the property order when I click category sorting, but when I click alphabetical sorting, however, the [PropertyOrder()] attribute still has effect, then the result is not totally alphabetical sorting, the property that has [PropertyOrder()] attribute will be out of the alphabetical order.

2. about the Category Order
now the Category is using the alphabetical order, is there any attribute that the specify the category order?