Hello @Wolfgang,
Looking at this a bit more closely, it seems that what you’re experiencing is the default and expected behaviour with WPML and the Gutenberg implementation.
However, in 1.4.1.4, we have added a filter so that you can switch to loading the current post’s stylesheet instead of the original one.
You can find a quick example here: https://docs.cwicly.com/miscellaneous/filters#wpml-original-stylesheet
Hope that fixes the issue you were experiencing.
Cheers,