From b29f07636d4dc713b5a6012791438ad44d4c79a4 Mon Sep 17 00:00:00 2001
From: Joke Book <jokebookyeye@gmail.com>
Date: Wed, 20 Feb 2019 21:11:27 +0000
Subject: [PATCH] fix: Equalise the chances when picking a random backdrop

---
 src/blocks/scratch3_looks.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/blocks/scratch3_looks.js b/src/blocks/scratch3_looks.js
index 94d70ea5b..e04df7b00 100644
--- a/src/blocks/scratch3_looks.js
+++ b/src/blocks/scratch3_looks.js
@@ -408,7 +408,7 @@ class Scratch3LooksBlocks {
                 const numCostumes = stage.getCostumes().length;
                 if (numCostumes > 1) {
                     let selectedIndex = Math.floor(Math.random() * (numCostumes - 1));
-                    if (selectedIndex === stage.currentCostume) selectedIndex += 1;
+                    if (selectedIndex === stage.currentCostume) selectedIndex = numCostumes - 1;
                     stage.setCostume(selectedIndex);
                 }
             // Try to cast the string to a number (and treat it as a costume index)