I had Auntie Ethel's Hair in my inventory for some time, as I was waiting to use it. Unfortunately I've just discovered it's missing, and an internet search has revealed that there is a bug where if you feed the Owlbear cub in camp, the game takes Auntie Ethel's Hair from your inventory. I believe this is what happened to me as the Hair is still in the inventory in the save before rescuing the cub, but missing after.
I'm feeling somewhat cheated as I was really looking forward to the stat boost. I really hope Larian will fix this bug, but in the meantime, is there something that can be done? I assume console commands don't exist? I've been looking at mods out of desperation, but they don't seem very safe at the moment. I really do not want to revert to a previous save as that was several days ago and I don't have the energy to face the Underdark and the Creche again.