Impacted versions: 13.0

Steps to reproduce: Create new object and change the categories_id before saving

Current behavior: get NewID in all onchange and cannot resolve it

Expected behavior: the same error at api.depends (compute or constraints)
An exemple:
`

@api.onchange('categorie_ids')
def change_categ_ids(self):
    company_id = self.company_id and self.company_id.id
    domain = [('type', '=', 'product'), '|', ('company_id', '=', False), ('company_id', '=', company_id)]
    if self.categorie_ids:
        domain = ['&','&',('categ_id', 'in', [c.id for c in self.categorie_ids]),('type', '=', 'product'),'|', 
        ('company_id', '=', False), ('company_id', '=', company_id)]
    print("domain:", self.categorie_ids)
    return {
        'domain':{
            'product_ids': domain,
        }
    }`

Self.categorie_ids return NewID.

EDITED:

When I used self.categorie_ids.ids, it's works.

But why ?