Multilingual content: Menu link is not correctly stored on translation.

Please check this https://www.drupal.org/project/multilingual_menu_urls →

It says "The 'link' field for menu items is not translatable - this is fine for internal links since Drupal knows which version to reference automatically."
Incase you still need to translate.

Did you try to enable "Custom menu link" on the "Content language" page (/admin/config/regional/content-language)?

Most probably it was solved during 🐛 Invalid argument exception when changing language of node with menu link to und or zxx Fixed in 10.2.x.
Please recheck and provide a feedback.

I tested this on Drupal 11.x, standard install, today. I used the steps in the issue summary and was not able to reproduce the problem.

We have the same problem using Drupal 10.4.4.

We have separate menus for the different languages. It's not possible to maintain the menu links via the "Menu settings" when editing content. It will always affect all translations of the content and mess up the corresponding other languages.

The only way to properly manage the menu items is by editing the menus directly (/admin/structure/menu).

One additional note: I once managed to mess up a menu quite badly when I simply changed the parent link of one Content's menu link (via "Menu settings"). The menu link that priorly was assigned disappeared and all child menu items ended up as top level menu items. Very messy.

This module work:
https://www.drupal.org/project/translatable_menu_link_uri →