Position of ion-buttons attribute end,start is not correct

Wrong results, please help:

When i check for CSS, i can’t see .bar-buttons-md[start]

Same here:

  <ion-navbar color="primary">
    <ion-buttons start>
      <button ion-button icon-only clear  (click)="goBack()">
        <ion-icon name="close"></ion-icon>

Screenshot from 2018-01-17 10-51-25


Apparently, there is the same problem in the Ionic Conference App.

Is this how it’s supposed to work?