Brightness not working with UIVisualEffectView from storyboard

Question

I created a nib file to create a custom TableViewCell with a Storyboard. So I used VisualEffectView with Blur and Vibrancy (nested UIVisualEffectView objects with blur and vibration effects).

In the view hierarchy, I put this below the contents of the TableViewCell.

I add text fields and image views to the uivisualeffectview view.

My problem is that if I do not set the vibrancy property in visualeffectview, all 3 versions of the light work fine. If I activate the vibrancy property, I see the text color effect, but blurring no longer works.