Symptoms
Assume that you enable HkTempdb mode by using ALTER SERVER Data Definition Language (DDL), if you create some objects such as triggers that are not hashed by name, you may notice that the "Debug Assertion Failed" error occurs.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Resolution
This issue is fixed in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
References
Learn about the terminology that Microsoft uses to describe software updates.