Data Browser UI can update itself in real time in response to data updates.
However, this does not work for relation columns. Starting from no relation and then adding relation data is not reflected automatically in the UI. I have to, for instance, switch tabs back and forth to see the change.
Similarly, removing relation data completely is not shown in the UI automatically.
I created an internal ticket BKNDLSS-26204 to add this feature.
I have noticed the same thing and have a similar question. If a relation is added to a data object, will views that rely on that relationship be updated in real time even though the change in relation is not reflected in real time in the data browser?
yes, the Views should be updated.
Do you experience another behaviour? If so, please create the separate topic for this.