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The commit ofbroke Edit module's metadata callback. Note that there is test coverage. But the whole business of moving from EntityPG to EntityNG ( ) has caused some of the tests to test EntityPG instead of EntityNG, which was the case here. Hence this could go on undetected.
The fix is easy:
- $items = $entity->get($field_name); - $items = $items[$langcode]; + $items = $entity->getTranslation($langcode)->get($field_name)->getValue();
However, it's the tests that also require updating to EntityNG. For that, I copied a subset ofverbatim — it was Berdir who wrote the fixed tests and hence should be credited here.