Should changes be commited after successful return from method which is annotated as Transactional?

[Bazalii]

I have a situation that I need to change the same entity several times in the context of one http request. I use hibernate panache and track updated entity using findById, change necessary fields (this entity is correctly persisted) but when the transactional method call ends and I get the same entity using 'get' method the entity remains the same, so, the transaction is not finished and all changes are not commited to database. When the same entity is changed for the second time and the request ends, only the changes that were made during the second change are commited correctly to the database.

Is it a correct behavior or am I missing how Transactional annotation actually works?
Is there a way to manually commit changes?