Updating language weight from the overview reverts label if translated

I can confirm that the changed language name label is reset to the original as soon as the weight of the language is changed.

I can also confirm the issue when doing the steps to reproduce. I had a first quick look; when debugging the values of the language entity on the language form, the label of the language is the correct one; when debugging on the overview admin page form, the label printed on dpm during debug is translated; when saving it overrides the original value. Something to do with the form build?

Pushed a temporary fix on the fork that enforces keeping the native label as the label of the language. I will open a new issue, as this is the result of a broader issue with DraggableListBuilder.php

DraggableListBuilder.php is loading the entities override-free, which is correct for saving but not for viewing. The issue described here happens on any draggable list. (this specific issue is the other way around, if that makes sense).

Openned new issue: for broader problem: https://www.drupal.org/project/drupal/issues/3417472 🐛 Multiple language site: changing the language weight saves wrong configuration Active