diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index e48e96e89..0687a1618 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -2080,6 +2080,11 @@ public final class CraftServer implements Server {
         return new CraftMerchantCustom(title == null ? InventoryType.MERCHANT.getDefaultTitle() : title);
     }
 
+    @Override
+    public Merchant createMerchant() {
+        return new CraftMerchantCustom(""); // if opened with the old methods title won't render, but will be empty.
+    }
+
     @Override
     public int getMaxChainedNeighborUpdates() {
         return this.getServer().getMaxChainedNeighborUpdates();
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/util/CraftMenus.java b/src/main/java/org/bukkit/craftbukkit/inventory/util/CraftMenus.java
index 79f507783..3d5651ee3 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/util/CraftMenus.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/util/CraftMenus.java
@@ -58,6 +58,11 @@ public final class CraftMenus {
         if (minecraftMerchant instanceof EntityVillager villager) {
             level = villager.getVillagerData().getLevel();
         }
+
+        if (minecraftMerchant.getTradingPlayer() != null) { // merchant's can only have one trader
+            minecraftMerchant.getTradingPlayer().closeContainer();
+        }
+
         minecraftMerchant.setTradingPlayer(player);
 
         player.connection.send(new PacketPlayOutOpenWindow(merchant.containerId, Containers.MERCHANT, merchant.getTitle()));