Doctrine unexpected behavior on bidirectional relations

I define two entities with bidirectional relations:

One

AppEntityProduct:
...
  manyToOne:
    productSet:
      targetEntity: AppEntityProductSet
      inversedBy: products
      cascade: ["all"]
      joinColumn:
        onDelete: RESTRICT
...

And two

AppEntityProductSet:
...
  oneToMany:
    products:
      targetEntity: AppEntityProduct
      mappedBy: productSet
      cascade: ['all']
...

If I drop all related Product entities, the related productSet entity automatically dropped too. And I don’t understand why. How I prevent this behavior?

Doctrine version 2.6.3

Answer

according to docs – https://www.doctrine-project.org/projects/doctrine-orm/en/2.7/reference/working-with-associations.html#transitive-persistence-cascade-operations

and you have cascade: ['all'] – the behavior is as expected