As they show some different behaviour for HTML tags and markdowns.
It seems to work for choice labels in Collect, but not in Enketo, see discussion in the forum Line breaks in choices - #8 by Kal_Lam and Include markdown in online web editor.
In Enketo, at the moment, line breaks only seem to work for notes and variable labels, but not for choice labels, guidance_hints and messages.
@Kal_Lam, @jnm ?
@Kal_Lam: I think the issue is not noted in the documentation?
(And it still doesn’t work for guidance_hints in Enketo? See Guidance Hint with line break?).
Different to range type, appearance vertical doesn’t seem to work with likert (in Enketo, and Collect?) See How do i create a form with a likert question in KoBoToolbox?.