Notion now has a “Filter multiple sources” dialogue when filtering across person properties in multi-source dashboards.

The technical detail is that some dashboards can apply a single Person filter across multiple underlying databases, with Notion showing which sources the filter will affect (e.g., different databases feeding the view). That can be powerful, but it also changes expectations if you assumed a filter only applied to one dataset.

To use it, try filtering a dashboard that pulls in more than one database and watch for the multi-source filter prompt. If it appears, confirm the filter scope before applying it—especially if you use person filters for reporting or time tracking—so you don’t accidentally filter out data from a different source.