I have the main language set to English and add a Greek translation for the Homepage.
Switching to Greek on frontend breaks the whole header and categories start to appear on the header although in the English version they do not exist. Attached you can also find respective screenshots.
Problem is related to woodmart because using the default storefront theme I can see the translated page without problems.
Update: If I disable the header builder menu, and use the deprecated header, the problem seems to be resolved and no categories appear on the top header menu.