For context I did an extension of the model project.project

class equipe(models. Model):
    _inherit = 'project.project'
    
    name = fields.Char(string="foo")
    voiture = fields.One2many('allmaids_extension.voiture','equipe')

Then if I restart odoo all the name fields of existing project records will appear as empty, without having to update the module than contain the above inheritance. If I remove the name overriding the old values are visible again so I guess that is related to the system defining another line in the database for the overridden field.

My question is in 2 points:

1. Is the fact that existing values of an overriden field disappear normal or should it be considered a bug?

2. Is the fact that the change is applied without having to update the module normal should it be considered a bug?