Game Mechanics: Ten Dose Alchemy Combine

[madgarin]

Using my Bearskin potion bag I cannot combine 10x Kilva's Skin of Flame into the 10 dose version.
(No clue if this is a new issue as I just started alchemying a couple days ago)
I was able to combine IVU and shrink pots into the 10 dose versions.
I relogged.
I used a different bearskin potion bag.
I stood on my head while reciting the alphabet.
Nothing helped.

Help me Modiwon Kenobi, you are my only hope.