Issue with translation - language not allowed


I got a strange issue concerning the language. My backenduser (non admin) is limited to english and french, the page is translated and basically everything works fine.

But: if the user tries to edit the root page of the page, he receives the following error when editing the english part, which is the main language:

recordEditAccessInternals() check failed. [ERROR: Language was not allowed.]

The changes however are taken into account, but the red warning that appears with error above is annoying. The error doeas not appear on the subpages.

Anyone a clue? Using Typo3 10.4.23

We have a quite similar issue. Anyone?

Similar issues here on Typo3 11.5: editor unable to create a page - ‘1: recordEditAccessInternals() check failed. [ERROR: The “languageField” field named “sys_language_uid” was not found in testing record!]’

And sys_language_uid doesn’t seem to be an exclude field, so you could add it to the access rights of a BE usergroup…