Angular component in expect assertions in unit test is not the same as just before it

it('should upload logo  - inProgress', () => {

    const testUploadProgress: number = 45;

    api.uploadImageWithProgress.and.returnValue(of({
        type: HttpEventType.UploadProgress,
        loaded: testUploadProgress
    }));

    const event = {
        target: {
            files: [
                new File(["data:image/png;base64,R0lGODlhDAAMAKIFAF5LAP/zxAAAANyuAP/gaP///wAAAAAAACH5BAEAAAUALAAAAAAMAAwAAAMlWLPcGjDKFYi9lxKBOaGcF35DhWHamZUW0K4mAbiwWtuf0uxFAgA7"], 'test', { type: 'image/png' }),
            ]
        }
    }

    fixture.detectChanges();

    component.onLogoUpload(event);

    fixture.detectChanges();

    // console.log(component);
    expect(component.isLoading).toBeTrue();
    expect(component.isLargeThenParent).toBeFalse();
    expect(component.uploadProgress).toBe(testUploadProgress, 'Unexpected upload progress');

});

This is one of my assertions. The commented console.log gives me component with property uploadProgress: 45. But when I try to access it right after that logging, it becomes equal to 0 (its default value). So my last assertion is not as expected. Need help to define what is the reason.