Cuba Platform 6.7.2
Steps to reproduce:
1- Create entity
2- Create attribute. In attribute creation screen, select MANY_TO_MANY.
3- Without saving, select MANY_TO_ONE.
4- Compile remaining fields and save
At this point, you will get the warning:
Table prefix is not equal to project namespace. If a table name does not match {PROJECT_NAMESPACE}_{NAME} pattern, Studio does not track any differences between the table and the entity.
Continue if you want to control the database schema for this entity manually without Studio intervention.