diff --git a/apps/desktop/src/main/__tests__/permission-overlay-controller.test.ts b/apps/desktop/src/main/__tests__/permission-overlay-controller.test.ts
index 5450db4f3a..aa43c203d1 100644
--- a/apps/desktop/src/main/__tests__/permission-overlay-controller.test.ts
+++ b/apps/desktop/src/main/__tests__/permission-overlay-controller.test.ts
@@ -21,6 +21,7 @@ import {
   type PermissionOverlayWindowLike,
 } from '../permission-overlay/permission-overlay-controller.js';
 import {
+  BUNDLE_ICON_OPTIONS,
   loadNativeBundleIcon,
   resolveAppBundle,
 } from '../permission-overlay/app-bundle.js';
@@ -317,6 +318,12 @@ describe('app bundle resolution for the drag', () => {
     assert.equal(await loadNativeBundleIcon(true, async () => 'icon'), 'icon');
   });
 
+  it('never requests the large icon size that kills packaged macOS builds', () => {
+    // 'large' hits a fatal NOTREACHED inside Chromium's IconLoader on
+    // macOS (SIGTRAP, not a catchable error) — see issue #3352.
+    assert.notEqual(BUNDLE_ICON_OPTIONS.size as string, 'large');
+  });
+
   it('walks three levels up from the executable to the .app', () => {
     assert.deepEqual(
       resolveAppBundle({
diff --git a/apps/desktop/src/main/permission-overlay/app-bundle.ts b/apps/desktop/src/main/permission-overlay/app-bundle.ts
index 4c148f1511..01767a101d 100644
--- a/apps/desktop/src/main/permission-overlay/app-bundle.ts
+++ b/apps/desktop/src/main/permission-overlay/app-bundle.ts
@@ -34,6 +34,15 @@ export interface ResolveAppBundleDeps {
   exists(path: string): boolean;
 }
 
+/**
+ * The only size every platform can actually deliver. `'large'` is
+ * unsupported on macOS: Chromium's IconLoader hits a fatal NOTREACHED and
+ * the process dies with SIGTRAP before the promise settles — no JavaScript
+ * error is ever thrown, so the try/catch in `loadNativeBundleIcon` cannot
+ * save the app. Callers upscale the 32x32 result as needed.
+ */
+export const BUNDLE_ICON_OPTIONS = { size: 'normal' } as const;
+
 /**
  * Reading a bundle icon is presentation-only. The original unpackaged npm
  * Electron runtime could terminate natively while macOS resolved its bundle
diff --git a/apps/desktop/src/main/permission-overlay/permission-overlay-main.ts b/apps/desktop/src/main/permission-overlay/permission-overlay-main.ts
index c9a992d776..9aa7701974 100644
--- a/apps/desktop/src/main/permission-overlay/permission-overlay-main.ts
+++ b/apps/desktop/src/main/permission-overlay/permission-overlay-main.ts
@@ -24,7 +24,7 @@ import { join } from 'node:path';
 import type { UiLocale } from '@maka/core/ui-locale';
 import { resolveOverlayAssetDir } from '../overlay-assets.js';
 import { openSystemPermissionPane, requestPermissionAccess } from '../permissions-actions.js';
-import { loadNativeBundleIcon, resolveAppBundle } from './app-bundle.js';
+import { BUNDLE_ICON_OPTIONS, loadNativeBundleIcon, resolveAppBundle } from './app-bundle.js';
 import { getPermissionOverlayCopy } from './permission-overlay-copy.js';
 import {
   createPermissionOverlayController,
@@ -77,7 +77,7 @@ export function createPermissionOverlayMain(
   async function resolveAppIconDataUrl(bundlePath: string | null): Promise<string | null> {
     if (!bundlePath) return null;
     const icon = await loadNativeBundleIcon(app.isPackaged, () =>
-      app.getFileIcon(bundlePath, { size: 'large' }),
+      app.getFileIcon(bundlePath, BUNDLE_ICON_OPTIONS),
     );
     if (!icon || icon.isEmpty()) return null;
     // nativeImage.createFromPath does not decode .icns reliably. Asking
@@ -274,7 +274,7 @@ function attachCardGestures(win: import('electron').BrowserWindow): void {
     }
     if (icon.isEmpty()) {
       const fallback = await loadNativeBundleIcon(app.isPackaged, () =>
-        app.getFileIcon(resolved.bundlePath, { size: 'large' }),
+        app.getFileIcon(resolved.bundlePath, BUNDLE_ICON_OPTIONS),
       );
       if (fallback && !fallback.isEmpty()) icon = fallback.resize({ width: 64, height: 64 });
       // The file drag still works without a decorative drag image.