What defines the title in the editor widget?

[MatthiasKl]

How can I set the title in the editor widget header? I am talking about highlighted part in the screenshot.

The source code of this element:

<header class="esri-editor__header">
  <h4 id="form_heading_widget_26" class="text-truncate esri-widget__heading" title="mskg">mskg</h4>
</header>

It looks like the title will always be the first field of the layer, which is not what I want in this case. I expected it to take the title defined in the form settings. However, this does not seem to be the case?!

[MonikaNicholsRDC]

I am also having this issue, I want to be able to choose the display field.