Fixes #2455

CHANGELOG.md

@@ -76,6 +76,7 @@
 * Fixed #2420
 * Fixed #2422
 * Fixed #2433
+* Fixed #2455
 
 ## Release Candidate 16 (07 Sep 2020)
 https://thebusybiscuit.github.io/builds/TheBusyBiscuit/Slimefun4/stable/#16

CONTRIBUTING.md

@@ -159,7 +159,7 @@ if (something) {
 // Actual code...
 ```
 * if/else statements should always include a bracket, please avoid one-line statements. (e.g. Avoid doing: `if (x == 0) return;`)
-* We do not enforce any particular width or column limit, but try to prevent your lines from becoming too long.
+* We do not enforce any particular width or column limit, just try to prevent your lines from becoming too long. But please avoid line-wrapping.
 * Annotations for methods or fields should never go on the same line, place them on the line above.
 * Comments should never go on the same line as code! Always above or below.
 * Make sure that empty lines are truly empty, they should not contain any whitespace characters.

src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/electric/reactors/Reactor.java

@@ -360,7 +360,7 @@ public abstract class Reactor extends AbstractEnergyProvider {
         inv.replaceExistingItem(22, new CustomItem(Material.BLACK_STAINED_GLASS_PANE, " "));
 
         if (processing.get(l).getOutput() != null) {
-            inv.pushItem(processing.get(l).getOutput(), getOutputSlots());
+            inv.pushItem(processing.get(l).getOutput().clone(), getOutputSlots());
         }
 
         if (accessPort != null) {