[Chiuso] Sub menu items / custom links are not translated

The top menu title is translated, but not the sub menu items when custom links are used.

As the menu is shown:
Hem (Home)
--> Offering
--> Get in touch

These are the menu settings is:
Hem
--> Erbjudande (/sv/#offering)
--> Kontakta oss (/sv/#contact)

Menus look correct when switching to English.

This applies to another sub menu also using custom links, while sub menus not using custom links are correct.

The reason I use custom links is to be able to use relative (#) links for navigating on sections of the page.

This is what I have installed:
WPML Multilingual CMS: 4.8.6
WPML String Translation: 3.4.1
WPML Sticky Links: 1.5.5