Pick blocking paintings in Creative mode only picks the generic painting item and not the painting specific item.

When I pick block a painting, instead of getting the item that specifically gives that painting, it gives the generic painting item.

Expected Behaviour:

When I use the pick block on painting "Kong", I get the painting that only places the painting "Kong"

Actual Behaviour:

When I use the pick block on painting "Kong" it gives the generic painting item.