When using the filter widget in Experience Builder, it currently only applies to a single data source / layer. This is proving to be a major limitation when creating experiences that have multiple layers with a common field. Ideally I need that filter to apply to all layers based on the common field in all layers.
For example, I have added two maps side-by-side on my page - one with a layer for "scenario A" and the other with a layer for "scenario B". The attribute tables of both layers have a common "region" field. I've added a filter widget that filters on the "region" field from the "scenario A" layer, but there is no way for that filter to flow through to the "scenario B" layer.
In Dashboards, this can be achieved under the category selector actions by selecting the source field and the target field. Similar functionality in Experience Builder would be really useful.
This Experience Builder question here also requests the same functionality.