Excel connection to Power BI datasets, "Insert Pivot Table" button, does not keep the relationships

Nope, I'm seeing the relationships are struggling to hold when using the "Insert PivotTable" connection with Power BI datasets.

The relationship between these tables seems to only be crashing when stacking fields in the "Rows" option and creating a hierarchy.  Here is what the pivot table shows when one field (Field A) is in the rows and the relating field (Field B) is in the values:

This is the correct value, as each should have a count of 1.

Here is are those same fields when both are in the rows field, creating a hierarchy:

The relationship no longer exists between these tables and all the values for Field B are showing, proving the lack of relationship.  When this same function is performed inside the Power BI application, this does not occur.  I have tested this with a variety of machines, datsets, tables, and fields and found that this error is consistent.

Have you seen anything like this before?