Bug # 3,611,883,077: Delve - Haunted Remains (depth 50) not giving crafting recipe (Blight)

Like the subject line says ...

Bug report # 3,611,883,077:

After a late start in Blight, I finally got to my first Haunted Remains in the Delve mine (at depth 50) ... only to find that there was no crafting recipe to click on. I checked in my hideout too: my crafting bench is not giving me the 5-linked socket crafting recipe.

I tried logging out and back on again. No joy.

I'd like to know if this is a general bug or not before I try to find another Haunted Remains.

Also, this is the second time for me in Blight that a crafting recipe has not appeared where the crafting bench has indicated that it should do so.

Update: the 5-linked socket crafting recipe turned up in the second Haunted Remains that I reached. This was at depth 54 (the first Haunted Remains was at depth 50).

This happened just like my previous bug, where I didn't find the 5-socket recipe in the first Azurite Fissure that I reached, but then found it in the second one (a little bit deeper into the Mine).