In SQL Server 2017 and 2019, persisted computed columns are not consistently blocked by using a columnstore index. This scenario occurs when you create a columnstore index table first, followed by the creation of a persisted computed column.
This issue is fixed in the following cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.