Dreadfell vault that still has diggable walls

[Pyros]

The patch notes for 1.7 mentionned removing the diggable walls in vaults and while I haven't done many vaults so not sure if it's the case for all of them I did see the low lvl vaults having doors now. Anyway encountered a vault in Dreadfell that still has diggable wall, it's a large one with water+traps in the middle and 4 small rooms in each corners that can be accessed via walls. Attached is a screen of what it looks like.