PaperMC/paper-server/nms-patches/Slot.patch

--- a/net/minecraft/server/Slot.java
+++ b/net/minecraft/server/Slot.java
@@ -48,6 +48,9 @@
     }
 
     public boolean hasItem() {
+        if (getItem() != null && getItem().count == 0) {
+            set(null);
+        }
         return this.getItem() != null;
     }
Cut fluff from patch headers. By: md_5 <git@md-5.net> 2015-05-25 20:37:24 +10:00			`--- a/net/minecraft/server/Slot.java`
			`+++ b/net/minecraft/server/Slot.java`
Minecraft 1.9.4 By: md_5 <git@md-5.net> 2016-05-10 21:47:39 +10:00			`@@ -48,6 +48,9 @@`
SPIGOT-178: Treat ItemStacks of 0 size as empty By: Thinkofdeath <thinkofdeath@spigotmc.org> 2015-01-04 22:06:29 +00:00			`}`

			`public boolean hasItem() {`
			`+ if (getItem() != null && getItem().count == 0) {`
			`+ set(null);`
			`+ }`
			`return this.getItem() != null;`
			`}`