Vigor Stacking Strange problem

Hey everyone,
got a strange problem with my vigors.

Well I've added them to the NPC and idk why but I can max buy 5 at the same time and if i buy for example those 5 it gets me 5x 1 Vigor into my Inventory. When I'll stack them I can stack them up to 50 without problems. [Max Stack for Vigors is 50 in Media/Server]

Well, anyone has an idea?

Go to the stackable limit, and change it to 50 [[;.

I already setted the maxstack in db and in itemdata to 50 as I wrote above.

anyway thx for answer