Why angular elements are swallowing error?

I have the simplest possible angular element within an angular project. I throw error in component belonging to angular element as follows:

dashboard-tile.component.ts user as <dashboard-tile a="100" b="50" c="25"></dashboard-tile> in index.html

ngOnInit() {
    throw "this is an error";
  }

But I see no error in chrome console. Can someone pls advice?

Link to video. Link to github repo containg the code.

Edit:

Testing:

1. I have tested it in chrome and firefox. Its reproducible in both.
2. If I treat above component like normal component (having <app-dashboard-tile><app-dashboard-tile/> in app.component.ts), exceptions are shown in console

A note:

1. This question is about angular elements and not about regular angular project. Its easy to overlook this.

2. It would be great if you could clone the project and run it locally. It wont take more that 2mins.

from Why angular elements are swallowing error?