From 0e41d6ba98090ef6139a3d99357e31a9d6e777b8 Mon Sep 17 00:00:00 2001
From: kwy404 <thekaway404@gmail.com>
Date: Sun, 27 Sep 2026 00:56:16 -0300
Subject: [PATCH] Fix resize update mode being an array when resizeDelay is set

---
 src/helpers/helpers.extras.ts       |  2 +-
 test/specs/core.controller.tests.js | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/src/helpers/helpers.extras.ts b/src/helpers/helpers.extras.ts
index 798e10c1e86..b0c426d4810 100644
--- a/src/helpers/helpers.extras.ts
+++ b/src/helpers/helpers.extras.ts
@@ -52,7 +52,7 @@ export function debounce<TArgs extends Array<any>>(fn: (...args: TArgs) => void,
   return function(...args: TArgs) {
     if (delay) {
       clearTimeout(timeout);
-      timeout = setTimeout(fn, delay, args);
+      timeout = setTimeout(fn, delay, ...args);
     } else {
       fn.apply(this, args);
     }
diff --git a/test/specs/core.controller.tests.js b/test/specs/core.controller.tests.js
index d1b2e424603..b7b5d7407a5 100644
--- a/test/specs/core.controller.tests.js
+++ b/test/specs/core.controller.tests.js
@@ -694,6 +694,32 @@ describe('Chart', function() {
       wrapper.style.width = '455px';
     });
 
+    it('should call update with the resize mode when resizeDelay is set', function(done) {
+      var chart = acquireChart({
+        options: {
+          responsive: true,
+          maintainAspectRatio: false,
+          resizeDelay: 10
+        }
+      }, {
+        canvas: {
+          style: ''
+        },
+        wrapper: {
+          style: 'width: 300px; height: 350px; position: relative'
+        }
+      });
+
+      spyOn(chart, 'update').and.callThrough();
+      waitForResize(chart, function() {
+        setTimeout(function() {
+          expect(chart.update).toHaveBeenCalledWith('resize');
+          done();
+        }, 50);
+      });
+      chart.canvas.parentNode.style.width = '455px';
+    });
+
     it('should restore the original size when parent became invisible', function(done) {
       var chart = acquireChart({
         options: {