From 16498ad3c36a83535d185a26ea3858573f1e7bc6 Mon Sep 17 00:00:00 2001
From: Francisco Hodge <hello@franciscohodge.com>
Date: Sat, 9 May 2020 15:36:05 -0400
Subject: [PATCH] Adjusting rowDOMContainer check

---
 src/lib/components/Keyboard.js | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/lib/components/Keyboard.js b/src/lib/components/Keyboard.js
index 1f201603..99b56b4f 100644
--- a/src/lib/components/Keyboard.js
+++ b/src/lib/components/Keyboard.js
@@ -1285,12 +1285,15 @@ class SimpleKeyboard {
          */
         const buttonHasContainerStart =
           !disableRowButtonContainers &&
-          button.includes("[") &&
-          button.length > 1;
+          typeof button === "string" &&
+          button.length > 1 &&
+          button.indexOf("[") === 0;
+
         const buttonHasContainerEnd =
           !disableRowButtonContainers &&
-          button.includes("]") &&
-          button.length > 1;
+          typeof button === "string" &&
+          button.length > 1 &&
+          button.indexOf("]") === button.length - 1;
 
         /**
          * Save container start index, if applicable