Rxjs Observable undefined - Cannot read property 'fromEvent' of undefined (modal-service.js)

[thornblom]

Since upgrading to to Rxjs 5.5.2 and ng2-bs3-modal 0.13.0, I get the error:
Cannot read property 'fromEvent' of undefined (modal-service.js).

Solution?

[AADELDounia]

I have the same problem did tou resolve it?

[tdonovancsra]

I appear to be getting this too.... It only happens on a build with angular/cli 6
"optimization": true,

[tomjohn9]

Observing the same problem, when we enabled optimization in build