Naming Strategy ORM Entity - plural problem

We are using Doctringe since 2.2.2.

We the follow relation:

manyToMany:
categories:
targetEntity: \Application\Model\Db\Entity\Category
inversedBy: topics
joinTable:
name: finq_topic_category
joinColumns:
topic_id:
referencedColumnName: id
inverseJoinColumns:
category_id:
referencedColumnName: id

As expected the generated methods in our entities were named like:

addCategory()
getCategories()
...

After we updated to 2.3.2 we got the follow method names:

addCategorie()
getCateogires()

I found in the changelog some notes like "changed naming strategy".
Took us several hours too find out that we had to downgrade back to
2.2.2. Is this a bug or "just" a new behavior?