angular: Angular 16 @HostListener('window:beforeunload', ['$event']) is not working

Which @angular/* package(s) are the source of the bug?

Zone.js

Is this a regression?

No

Description

After migration from 15.2.10 to 16.2.* (tried 16.2.3 and 16.2.9) the working approach with showing the default browser preventing reload popup is not working any more.

Working minimalistic solution (Angular 15) https://stackblitz.com/edit/angular-15-starter-pack-iuvmnk The same solution with Angular 16 (not working) https://stackblitz.com/edit/stackblitz-starters-qhmmsm

Step to reproduce

• open https://stackblitz.com/edit/stackblitz-starters-qhmmsm with Chromium based browser (Chrome/Edge)
• wait until the app is built
• open console
• click between the header and the link (you will see ‘Changed!’ output in the console)
• try to reload the page (either the embedded in stackblitz or the browser page - it doesn’t matter, should work the same in both cases)

ER: the default browser preventing reload popup should appear AR: the default browser preventing reload popup doesn’t appear

Please provide a link to a minimal reproduction of the bug

https://stackblitz.com/edit/stackblitz-starters-qhmmsm

Please provide the exception or error you saw

The browser doesn't show the default preventing reload popup.

Please provide the environment you discovered this bug in (run ng version)

@angular/core@16.2.9
@angular/common@16.2.9
@angular/animations@16.2.9
@angular/compiler@16.2.9
@angular/forms@16.2.9
@angular/platform-browser@16.2.9
@angular/platform-browser-dynamic@16.2.9

Chrome 118.0.5993.89 64-bit / Chrome 118.0.5993.71 64-bit / Chrome 117.0.5938.132 64-bit / Edge 117.0.2045.60 64-bit

Anything else?

As you can see from the component code if I click on the layout and change it to the changed state I shoud see the default browser popup asking “Reload the site?”, but in Chrome 118.0.5993.89 64-bit / Chrome 118.0.5993.71 64-bit / Chrome 117.0.5938.132 64-bit / Edge 117.0.2045.60 64-bit it doesn’t appear (meanwhile it works in Firefox 118.0.2 64-bit or 15.2.10 version), Win 10. One more mention about the same problem here: https://github.com/angular/angular/issues/50935