Hi @SBerg_VHB
Thanks for the post!
If I understand your question correctly, you would like to set the displayType property of the attachments widget used by the editor widget to "preview".
The editor widget in ExB dev samples is actually the component imported from the jsapi. According to the jsapi docs, the displayType property of the attachments widget is default as "list"
and the editor component does not support override default properties of the attachments widget for now.
So currently, if you want to "preview" those thumbnails, you can use the attachments widget separately instead of using the one embedded in the editor widget.
Hope this helps!
Thanks
- Tian