No grey background on ion-list-header

Hi. I have tried using the ion-list-header in an ion-list but it does not show up with a grey background like the examples show on this page when I select iPhone in mobile rendering inside Chrome:

and maybe some examples of your code?

Sure, here is the example on the ionic2 docs Lists example

  <ion-item>Terminator II</ion-item>
  <ion-item>The Empire Strikes Back</ion-item>
  <ion-item>Blade Runner</ion-item>

And this is how that looks in Chrome when running iPhone5 as mobile type. Notice that ion-list-header has white background. I have not adjusted the default colours anywhere so this looks to me like a bug:


Edit: There is a style update on the ion items though in the screenshot example (I removed the left indentation of items).