From 7497b8352529f010eb962c2676b56b3f9f2c8b89 Mon Sep 17 00:00:00 2001
From: Joe DF <3848219+joedf@users.noreply.github.com>
Date: Sat, 10 Sep 2022 21:31:15 -0400
Subject: [PATCH] based on @pearcetm 's fix

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

diff --git a/src/openseadragon.js b/src/openseadragon.js
index 87858e29..32189538 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -1102,7 +1102,7 @@ function OpenSeadragon( options ){
                 // Extend the base object
                 for ( name in options ) {
                     src = target[ name ];
-                    copy = options[ name ];
+                    copy = Object.getOwnPropertyDescriptor(options, name).value;
 
                     // Prevent never-ending loop
                     if ( target === copy ) {