Currently, every time you purchase something from a merchant in NWN2, the merchant's list of goods resets back to the top. In order to get another item beneath the one you just purchased, you have to scroll back down to the same position manually.
This minor update is compatible with OC, MotB, SoZ. This file fixes stores, so that purchasing an item does not reset the list position back to the top.
This does not correct the secondary issue, where the selection moves up one row after purchasing an item.
This file fixes stores in NWN2, so that purchasing an item does not reset the list position back to the top. To use it, right-click on the link and choose Save-As, then save into "My Documents\NEverwinter Nights 2\Override". Restart any NWN2 session you had in progress.