Barter menu doesn't show vendor's inventory with Uvirith's Legacy
Uvirith's Legacy adds a chest to some alchemy vendors, such as Nalcarya of White Haven in Balmora. This chest contains a new ingredient ("Telvanni Mineral Oil"), which the vendors will sell. However, this prevents ingredients from the vendor's inventory from appearing in the barter menu in OpenMW.
(RM-3961 from redmine: created on 2017-07-19 by Christoph Dominik Moritz Mies, )