By default, row-level security filtering uses single-directional filters, whether the relationships are set to single direction or bi-directional. You can manually enable bi-directional cross-filtering with row-level security by selecting the relationship and checking the Apply security filter in both directions checkbox.
Select this option when you've also implemented dynamic row-level security at the server level, where row- level security is based on username or login ID.
Graphical user interface, application, Word Description automatically generated Reference:
https://docs.microsoft.com/en-us/power-bi/admin/service-admin-rls