InlinePanel raises IntegrityError during save

[ArthurConan]

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Hello! I have two models EmployeeContact (snippet) and EmployeePage (Page) with InlinePanel, connected to the first model EmployeeContact All these models are localized and have more than 1 language

@register_snippet
class EmployeeContact(TranslatableMixin):
    class Meta(TranslatableMixin.Meta):
        verbose_name = _('employee contact')

    type_of_contact = models.CharField(_('Type of contact'), max_length=255)
    employee = ParentalKey(
        'EmployeePage',
        on_delete=models.PROTECT,
        related_name='employee_contacts'
    )
    contact = models.CharField(_('Employee contact'), max_length=255)
    

class EmployeePage(Page):
    name = models.CharField(_('Name'), max_length=255)
    surname = models.CharField(_('Surname'), max_length=255)
    job = models.CharField(_('Job title'), max_length=255)
    
    content_panels = Page.content_panels + [
         MultiFieldPanel(
            [
                FieldPanel('name'),
                FieldPanel('surname'),
                FieldPanel('job'),
            ],
            heading=_('General'),
         MultiFieldPanel(
            [
                InlinePanel('employee_contacts'),
            ],
            heading=_('Personal employee contacts),
        ),
    ]

If I add EmployeeContact to existed EmployeePage - it's all okay, snippet is created and linked to EmployeePage But if I create EmployeePage with filled EmployeeContacts inline - I get IntegrityError

django.db.utils.IntegrityError: duplicate key value violates unique constraint "company_employeecontact_translation_key_locale_id_bb11fe2f_uniq" DETAIL: Key (translation_key, locale_id)=(4a531763-ecae-4a42-805e-9f2794ce0117, 5) already exists.

I can be wrong, but it can be caused by such situations - when I create EmployeePage in eng (main lang), it also creates in other lang, and it try to create snippet EmployeeContact only for locale EN for ALL pages - and of course it raises Integrity Error ??

Anyway THANKS!

[zerolab]

Hey @ArthurConan,

I believe this should be fixed in the latest 2.15, 2.16, 3.0 Wagtail versions.

Related: https://github.com/wagtail/wagtail/pull/8161

Any chance you can double check?