How enable icons for user interface?

I have two cases. In both of them I would like know to make the icons visible properly.

  • First case
  1. I creat new Menu item (e.x. InQ URL), type Data Constant Reference and I choose an MenuIcon from the list.
  2. The MenuIcon is not displayed in the user interface (see the green box in the pictures below).
  • Second case:
    In the user Interface:
  1. I choose Settings > Users & Security> Add user the icon SAVE is not displayed properly.
  2. I choose Settings > Users & Security> Users the icon Remove Access is not displayed properly.