[Resolved] Design in Translations does not match original design using Gutenberg

Background of the issue:
I am translating pages from my Gutenberg-based theme with the advanced translation editor. The design of the translations does not match the design of the original pages.

Symptoms:
The design in translations does not match the original design using Gutenberg.

Questions:
Why does the design of the translated pages not match the original design?
How can I ensure that the design remains consistent when using the advanced translation editor?