https://wpml.org/de/errata/advanced-custom-fields-multilingual-reordering-repeater-fields-makes-the-translations-unsynchronised/
Advanced Custom Fields Multilingual - Reordering Repeater fields unsynchronizes the translations -...
Apr 13, 2023 - When using Advanced Custom Fields with Repeater fields in a multilingual setup, reordering the repeater fields in the default language causes the
advanced custom fieldsmultilingualreorderingrepeatertranslations