We have a live connection from Power BI reports to SSAS tabular model. Recently we hid several tables (dimensions) from client tools in SSAS, but these tables are still visible in the Power BI reports!
(In Excel however, they are not visible!)
In the past, we have done similar things and had no problem. In fact, some other tables hidden from client tools in SSAS are not visible in Power BI, with active relationships to other tables as well.
Additionally, I cannot reproduce this error: When I import a new table and hide it, the table is hidden in PowerBI reports. (I also checked, it doesn't matter if the table is used in the report or in the filter pane or if the columns have been renamed/duplicated/etc.)