From d3956af4031ab5e1a451429c49d6923bcf932bf7 Mon Sep 17 00:00:00 2001
From: Wesley Smith <me@wesjd.net>
Date: Fri, 24 Apr 2020 18:30:26 -0400
Subject: [PATCH] Fix Potion#toItemStack swapping the extended and upgraded
 constructor values.

While the Potion class is deprecated, it is still used in some plugins for cross-version potion handling. This issue has existed for a long time, and has caused many heaches along the way.

diff --git a/src/main/java/org/bukkit/potion/Potion.java b/src/main/java/org/bukkit/potion/Potion.java
index b9dbbfd0..ac02ae4f 100644
--- a/src/main/java/org/bukkit/potion/Potion.java
+++ b/src/main/java/org/bukkit/potion/Potion.java
@@ -267,7 +267,7 @@ public class Potion {
         }
         ItemStack itemStack = new ItemStack(material, amount);
         PotionMeta meta = (PotionMeta) itemStack.getItemMeta();
-        meta.setBasePotionData(new PotionData(type, level == 2, extended));
+        meta.setBasePotionData(new PotionData(type, extended, level == 2)); // Paper - fix swapped values
         itemStack.setItemMeta(meta);
         return itemStack;
     }
-- 
2.21.0 (Apple Git-122)