[Gelöst] Product categories in non-default language gone after updating!

Background of the issue:
I am trying to update my WordPress site, versteckter Link, using WPML. After updating everything, I noticed an issue with product categories in non-default languages.

Symptoms:
Non-default language product categories are not showing up on the front end after updating, although they still appear in the backend.

Questions:
Why are the non-default language product categories not showing up on the front end after the update?
How can I resolve the issue of missing product categories in non-default languages?