Copper Chests can change variants by creating Double Chests

How to reproduce this issue: Grab two different Copper Chest variants from the Creative Menu then place them next to each other

Expected Result: The Copper Chests don’t turn into a Double Chest because the are two different variants

Actual Result: Both Coppers Chest combine and turn into a Double Chest Even though they are two different variants. The one that is more oxidized ends up becoming the same variant as the less oxidized Copper Chest when both are combined as shown in the two videos below