Template field does not follow sync with origin

[webmasterlv]

Bug description

When using multisite, the template gets desynced from child pages.

How to reproduce

Enable multisite. Add template field to Page's Blueprint:

handle: template
    field:
        type: template
        display: Šablons
        localizable: false
        folder: templates/pages

1. Create page in origin, save
2. Switch to another locale, save & publish.

Localized entry data gets populated with template selected in origin, which I guess is fine.
In localized page I cannot change layout, which is fine.

Now, when changing layout in origin page, the localized page data still shows old template:

"template":"templates\/pages\/fullscreen"

If I remove that JSON key/value and save origin, the translated page's data again receives the template, but subsequent changes of origin page layout are not proliferated to child pages.

Logs

Environment

Environment
Laravel Version: 12.56.0
PHP Version: 8.3.30
Composer Version: 2.9.5
Environment: local
Debug Mode: ENABLED
Maintenance Mode: OFF
Timezone: Europe/Riga
Locale: lv

Cache
Config: NOT CACHED
Events: NOT CACHED
Routes: NOT CACHED
Views: CACHED

Drivers
Broadcasting: null
Cache: file
Database: mysql
Logs: stack / single
Mail: smtp
Queue: sync
Session: file

Storage
public/storage: LINKED

Statamic
Addons: 6
Sites: 2 (LAT, ENG)
Stache Watcher: Enabled
Static Caching: Disabled
Version: 6.14.0 PRO

Statamic Addons
iagofelicio/geo-maps: 2.3.0
pecotamic/sitemap: 1.4.10
rias/statamic-address-field: 2.0.1
statamic/eloquent-driver: 5.6.3
statamic/importer: 2.1.0
statamic/ssg: 4.1.0

Statamic Eloquent Driver
Addon Settings: file
Asset Containers: file
Assets: file
Blueprints: file
Collection Trees: eloquent
Collections: file
Entries: eloquent
Fieldsets: file
Form Submissions: eloquent
Forms: file
Global Sets: file
Global Variables: eloquent
Navigation Trees: eloquent
Navigations: file
Revisions: file
Sites: file
Taxonomies: file
Terms: eloquent
Tokens: file

Installation

Fresh statamic/statamic site via CLI

Additional details

Gemini suggests this might be related to Eloquent driver, in this case, I will move the issue there.
This is the workaround I use while this is fixed (in AppServiceProvider::boot):

$entryModelClass = config(
	'statamic.eloquent-driver.entries.model',
	\Statamic\Eloquent\Entries\EntryModel::class
);

$entryModelClass::saving(function ($model) {
	if ($model->origin_id && $model->collection === 'pages') {
		$data = $model->data ?? [];

		if (array_key_exists('template', $data)) {
			unset($data['template']);
			$model->data = $data;
		}
	}
});

[duncanmcclean]

I'm struggling to reproduce this (I've tried with and without the Eloquent Driver). Are you able to replicate it on a fresh Statamic site?

[webmasterlv]

@duncanmcclean I can reproduce this after php artisan migrate:fresh, php artisan cache:clear (I'm in dev mode but jsut in case).
I created new page in origin (LV), then switch to another language (EN), published. In database I see that "template" key is added to data, and publicly, the EN page has different layout than LV page.
Which config files you need and how can I send them?

Here is what I see in database:

At the same time, while in database template:templates/pages/fullscreen, this is what UI shows for EN page:

[webmasterlv]

@duncanmcclean
Here is my sites.yaml

lv:
  name: LAT
  url: '{{ config:app:url }}/lv'
  locale: lv_LV
  lang: lv
en:
  name: ENG
  url: '{{ config:app:url }}/en'
  locale: en_US
  lang: en

Here is my Page blueprint:

tabs:
  main:
    display: Main
    sections:
      -
        fields:
          -
            handle: title
            field:
              type: text
              required: true
              validate:
                - required
              localizable: true
              display: 'Sadaļas nosaukums'
          -
            handle: content
            field: content_fieldset.content
          -
            handle: alt_title
            field:
              type: text
              display: 'Alternatīvais virsraksts'
              localizable: true
              instructions: 'Ja aizpildīts, pielietojas sadaļas sākumā kā galvenais virsraksts.'
          -
            handle: short_description
            field:
              type: text
              display: 'Īsais apraksts'
              localizable: true
              instructions: 'Pielietojas dažādos satura blokos. Vēlamais garums 120-190 zīmes'
          -
            handle: template
            field:
              type: template
              display: Šablons
              localizable: false
              folder: templates/pages
              instructions: |-
                Galvenais lapas šablons. Ietekmē vispārējo sadaļas izskatu. Šablonu apraksti:

                - `default` - balta lapa ar virsrakstu, bez bildes
                - `fullscreen` - sadaļa ar fona bildi un virsrakstu
                - `home` - speciāls šablons priekš sākumlapas
                - `project` - speciāls šablons priekš projektu sadaļas
                - `text` - šablons teksta lapām, ar šauro saturu
          -
            handle: page_image
            field:
              max_files: 1
              container: public
              type: assets
              display: 'Sadaļas foto'
              localizable: false
              instructions: 'Tiek pielietota šablona noformējumā, kā arī tiek piegādāta soc. tīkliem, daloties ar saiti.'
      -
        display: 'SEO dati'
        instructions: 'Aizpildiet informāciju priekš meklētāju dzinējiem (Google u.c.)'
        fields:
          -
            handle: page_title
            field:
              type: text
              display: 'Meta virsraksts'
              instructions: 'Tiek pielietota pārlūka cilnes nosaukumā, kā arī meklēšanas rezultātos Google u.c.'
              localizable: true
          -
            handle: meta_keywords
            field:
              type: text
              display: 'Meta atslēgvārdi'
              localizable: true
              instructions: 'Tiek ievietota sadaļas meta datos, ko izmanto meklējuma programmas.'
          -
            handle: meta_description
            field:
              type: text
              display: 'Meta apraksts'
              localizable: true
              instructions: 'Tiek ievietota sadaļas meta datos, ko izmanto meklējuma programmas.'
          -
            handle: disable_indexing
            field:
              type: toggle
              display: 'Aizliegt indeksēšanu'
              localizable: false
  sidebar:
    display: Sidebar
    sections:
      -
        fields:
          -
            handle: slug
            field:
              type: slug
              localizable: true
              validate: 'max:200'
          -
            handle: page_type
            field:
              type: select
              display: 'Page role'
              localizable: false
              sortable: false
              replicator_preview: false
              max_items: 1
              searchable: false
              options:
                news_listing: 'News listing'
                projects_listing: 'Projects listing'
                contacts_page: 'Contacts page'
                work_areas: 'Work areas'
title: Page

Please comment if you need additional data.