[OJS 3.3.0-13 with Postgres] Apparently an error when merging 2 profiles

Hey @asmecher ,

I changed the affiliation of a profile that was merged and I noticed that the information was not saved. When entering the profile again, the affiliation was the same. I checked the database and saw that the information is saved in assoc_id = 0, but it is as if the site displays the line with assoc_id = null.
I would like to confirm if this is a system error installed on our server or if it is a general bug.

Regards,
Adriano Moreno

Bug images:
https://drive.google.com/file/d/17Z_9EjKMfpc03dwa6ZFH1cZYlGiQqG2o/view?usp=sharing
https://drive.google.com/file/d/1x2OYefg1QiRvsBqdXOCVc40ndanvMoIk/view?usp=sharing