Loading spinner should appear and disapper after a delay but it doesn't appear at all, but if i remove the line "this.isLoading = false" the spinner is showing but doesn't disappear !

```
 const myObservable = of("foobar");

    myObservable.subscribe((value) => {

      this.isLoading = true,
        delay(5000),
       // If i remove the line below the spinner is showing
        this.isLoading = false

      console.log(value);  
    });

```