Issue with "Allowlist config Urls"

:white_check_mark: Fetch configuration backend
:white_check_mark: Set configuration backend
:white_check_mark: Fetch configuration frontend (onChange)
:x: Set configuration fronend

I don’t know why the frontend set doesn’t work anymore, I haven’t updated the front-end code.
am I the only one finding this difficult? :smiling_face_with_tear: