Steps to reproduce

install LS 6.x
create a survey
add a 5pointchoice question
see: preview is selectable by keyboard (tab to focus the field, arrows to change your choice)

admin: alter display as slider (stars|emoji) as you want
save: question
preview: survey
see: question is no more selectable by keyboard, no choice can be done by arrows keys.

Expected result

as impaired participant I want to focus a 5pointchoice question with slider to express myself
as impaired participant I want to change my choice by pressing arrow keys: up/down or left/right
as impaired participant I want to see which question is focused in the survey page so that is easy to navigate between questions.

Actual result

No question gets highlighted by having an outline.
Question type 5pointchoice having slider stars/emoji can't be answered by keyboard selection
Question is missing WCAG 2.2 AA - Guideline 2.4 Navigable and Criterion 2.4.7 Focusable is not satisfied.
European Public Sector website can't use this kind of question