"unclickable" state-icon

I have a Picture Elements Card. I added an element like this:

  - type: state-icon
    entity: input_boolean.fifthshutteropen_bool
    style:
      top: 20%
      left: 19.5%
      '--mdc-icon-size': 20px
    tap_action:
      action: none

In this case when the mouse is over the icon, the mouse pointer changes (indicates that it is “clickable” however nothing happnes when I click). Is there a setting / trick so the mouse pointer does not change when it is over the icon?