diff --git a/CHANGELOG.md b/CHANGELOG.md
index cec4b0f1641..8daf5aa05ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@
 - Fixed a bug where newly-selected elements weren’t being rendered correctly for relational fields set to the “Card grid” view mode. ([#18362](https://github.com/craftcms/cms/issues/18362))
 - Fixed a bug where card previews weren’t getting updated when a selected field was removed from the field layout.
 - Fixed potential JavaScript errors that could occur if a disclosure menu’s trigger or target elements were missing. ([#18358](https://github.com/craftcms/cms/issues/18358))
+- Fixed a JavaScript error that occurred if a Matrix field’s label was hidden. ([#18366](https://github.com/craftcms/cms/issues/18366))
 - Fixed an infinite recursion bug. ([#18363](https://github.com/craftcms/cms/issues/18363))
 
 ## 5.9.5 - 2026-01-31
diff --git a/src/fields/Matrix.php b/src/fields/Matrix.php
index c490e75f03c..63139873082 100644
--- a/src/fields/Matrix.php
+++ b/src/fields/Matrix.php
@@ -949,7 +949,7 @@ private function blockViewActionMenuItems(): array
 
   setTimeout(() => {
     const disclosureMenu = menu.data('disclosureMenu');
-    disclosureMenu.on('show', () => {
+    disclosureMenu?.on('show', () => {
       let blocks = getBlocks();
       let expandLabel, collapseLabel;
       if (blocks.is('.sel')) {
@@ -1030,7 +1030,7 @@ private function copyAction(string $type, string $entrySelector): array
 
   if (!field.length) {
     setTimeout(() => {
-      menu.data('disclosureMenu').removeItem(btn[0]);
+      menu.data('disclosureMenu')?.removeItem(btn[0]);
     }, 1);
     return;
   }
@@ -1057,7 +1057,7 @@ private function copyAction(string $type, string $entrySelector): array
 
   setTimeout(() => {
     const disclosureMenu = menu.data('disclosureMenu');
-    disclosureMenu.on('show', () => {
+    disclosureMenu?.on('show', () => {
       const entries = getEntries();
       let copyLabel;
       if ($(entries).is('.sel')) {
@@ -1134,7 +1134,7 @@ private function bulkAction(string $entrySelector, string $activateJs, array $it
 
   if (!field.length) {
     setTimeout(() => {
-      menu.data('disclosureMenu').removeItem(btn[0]);
+      menu.data('disclosureMenu')?.removeItem(btn[0]);
     }, 1);
     return;
   }
@@ -1147,7 +1147,7 @@ private function bulkAction(string $entrySelector, string $activateJs, array $it
 
   setTimeout(() => {
     const disclosureMenu = menu.data('disclosureMenu');
-    disclosureMenu.on('show', () => {
+    disclosureMenu?.on('show', () => {
       disclosureMenu.toggleItem(btn[0], !!getEntries().length);
     });
   }, 1);