Unstable Key Error

[Austin]

Is anyone else receiving errors involving Unstable Keys for tables that use _RowNumber as the key? I have handfuls of tables that are used exclusively to pull data that is combined from 3-5 tables via a view in my database. These tables don’t have unique values that could be used as keys. This hasn’t thrown any errors until yesterday evening.
@Steve I already have a support ticket in, just wondering if this is unique to us