Flex 5 not respecting items assigned additional group when dragged onto quote

I have noticed a specific behavior in Flex 5 that is different in Flex 4 and am wondering if this is suppose to be the case.

When dragging inventory from the inventory tree on the left onto a quote with Drop Mode set as Auto, it seems Flex 5 is dropping the items into subtotal categories on the quote based on items assigned primary category group instead of the category it is being dragged from within the inventory tree structure on the left.

I have items that are in a few additional category groups and wish they would be dragged onto the quote in the respective category I am dragging the item from within the tree structure.

Flex 4 does place the items in the respective category it is being dragged from within the tree.

Steps to Reproduce:

- "Item 1" has a primary group assigned as "Category 1" and an additional group assigned as "Category 2".

- Drag "Item 1" within "Category 2" from inventory tree onto quote with Drop Mode set at "Auto".

Flex 4 Behavior: "Item 1" on quote will be in a subtotal category called "Category 2"

Flex 5 Behavior: "Item 1" on quote will be in a subtotal category called "Category 1"

I hope I am explaining this thoroughly.  I do prefer the behavior of Flex 4 when building quotes and do not wish to have my items in multiple different subtotal categories when dragging items onto quotes.