Thanks for the report @TovenaaarThe merchants inventories are not available for local co-op multiplayer. The primary player can access the shops but the 2nd player cannot.
Hi there @DawnJon are you saying that you experienced this issue (player 2 not being able to see an NPC’s shop inventory), but that after you reinstalled the game the issue doesn‘t exist (and player 2 is now able to see an NPC’s shop inventory)?So, I’ve personally tested this with friends, to remove many of the small and annoying bugs like this, it’s well to delete and reinstall Terraria, not just for yourself, your friends too, it only being around 350 mb makes that pretty easy to do. Hope this helps