My PC Victoria Wolf received a Crystal Inclusions potion from an unstable seam and once I used it I was given an error about it being deprecated and to make a bug report about it.
I don't remember the location name of the seam, it was an unstable seam in the peerage catacombs, blue. Lead to a snow covered campsite with corpses strewn about. Description of the area mentioned them being crushed and me not feeling safe remaining for long.
She still has a couple items from that seam such as a Crystal Conjuring Shard and a Crystal Talisman if that helps at all.