From 3ed81b88f6ea4c8d32ead6ded57e04929e4b8980 Mon Sep 17 00:00:00 2001
From: Sridhar Bala <sridharkalaibala@gmail.com>
Date: Sun, 13 Sep 2026 01:40:34 +0530
Subject: [PATCH] fix: cancel pending style manager updates on destroy

---
 packages/core/src/style_manager/index.ts      | 12 +++--
 .../core/test/specs/style_manager/destroy.ts  | 52 +++++++++++++++++++
 2 files changed, 60 insertions(+), 4 deletions(-)
 create mode 100644 packages/core/test/specs/style_manager/destroy.ts

diff --git a/packages/core/src/style_manager/index.ts b/packages/core/src/style_manager/index.ts
index 3e8eb5380..309ed4fa5 100644
--- a/packages/core/src/style_manager/index.ts
+++ b/packages/core/src/style_manager/index.ts
@@ -79,6 +79,8 @@ export default class StyleManager extends ItemManagerModule<
 > {
   builtIn: PropertyFactory;
   upAll: Debounced;
+  private upProps: Debounced & (() => void);
+  private trgCustom: Debounced & (() => void);
   properties: typeof Properties;
   events = StyleManagerEvents;
   sectors: Sectors;
@@ -121,15 +123,15 @@ export default class StyleManager extends ItemManagerModule<
     model.listenTo(em, ComponentsEvents.toggled, this.__clearStateTarget);
 
     // Triggers only for properties (avoid selection refresh)
-    const upProps = debounce(() => {
+    this.upProps = debounce(() => {
       this.__upProps();
       this.__trgCustom();
     }, 0);
-    model.listenTo(em, 'styleable:change undo redo', upProps);
+    model.listenTo(em, 'styleable:change undo redo', this.upProps);
 
     // Triggers only custom event
-    const trgCustom = debounce(() => this.__trgCustom(), 0);
-    model.listenTo(em, `${events.layerSelect} ${events.target}`, trgCustom);
+    this.trgCustom = debounce(() => this.__trgCustom(), 0);
+    model.listenTo(em, `${events.layerSelect} ${events.target}`, this.trgCustom);
 
     // Other listeners
     model.on('change:lastTarget', () => em.trigger(events.target, this.getSelected()));
@@ -836,5 +838,7 @@ export default class StyleManager extends ItemManagerModule<
     this.SectView?.remove();
     this.model.stopListening();
     this.upAll.cancel();
+    this.upProps.cancel();
+    this.trgCustom.cancel();
   }
 }
diff --git a/packages/core/test/specs/style_manager/destroy.ts b/packages/core/test/specs/style_manager/destroy.ts
new file mode 100644
index 000000000..917272be9
--- /dev/null
+++ b/packages/core/test/specs/style_manager/destroy.ts
@@ -0,0 +1,52 @@
+import Editor from '../../../src/editor';
+
+describe('StyleManager pending updates on destroy', () => {
+  beforeEach(() => {
+    jest.useFakeTimers();
+  });
+
+  afterEach(() => {
+    jest.clearAllTimers();
+    jest.useRealTimers();
+  });
+
+  test('does not refresh properties after destroying the editor', () => {
+    const editor = new Editor({});
+    const em = editor.getModel();
+    em.Pages.onLoad();
+    const component = editor.addComponents({ type: 'text', content: 'Text', style: { padding: '5px' } })[0];
+    em.Styles.select(component);
+    jest.runOnlyPendingTimers();
+    const update = jest.spyOn(em.Styles, '__upProps');
+    component.setStyle({ padding: '10px' });
+    editor.destroy();
+    expect(() => jest.runOnlyPendingTimers()).not.toThrow();
+    expect(update).not.toHaveBeenCalled();
+  });
+
+  test('does not send pending custom events after destroying the module', () => {
+    const editor = new Editor({});
+    const em = editor.getModel();
+    const styles = em.Styles;
+    const custom = jest.fn();
+    em.on(styles.events.custom, custom);
+    em.trigger(styles.events.target, undefined);
+    styles.destroy();
+    jest.runOnlyPendingTimers();
+    expect(custom).not.toHaveBeenCalled();
+    editor.destroy();
+  });
+
+  test('still refreshes properties and sends custom events while alive', () => {
+    const editor = new Editor({});
+    const em = editor.getModel();
+    const update = jest.spyOn(em.Styles, '__upProps');
+    const custom = jest.fn();
+    em.on(em.Styles.events.custom, custom);
+    em.trigger('styleable:change');
+    jest.runOnlyPendingTimers();
+    expect(update).toHaveBeenCalledTimes(1);
+    expect(custom).toHaveBeenCalled();
+    editor.destroy();
+  });
+});