Steps to reproduce

1. Define a trait definition with a jcrMultiValueField (see attached definition
2. In the Preview App add the trait and add a new value
3. Insert a value -> The preview app will update 
4. Remove the field by clicking on the trash icon -> nothing happens

.. Logs, screenshots, gifs...

Expected results

When clicking on the trash icon of a multi value field the preview app should reflect these changes and reload the content.

Actual results

The preview app does not update and the content stays the same as before, although the trait value was removed

Workaround

Development notes