This thread is resolved. Here is a description of the problem and solution.
Problem: Translated page lost layout on Elementor Solution: It was about these fields which I set properly now to "Copy" and you are good to go. Simply open those originals and click "Update" so that translated pages pick up these values, because these custom fields preferences are set globally. Relevant Documentation: https://wpml.org/forums/topic/translated-page-lost-layout-on-elementor/#post-4825453
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