When I open the app and there is a value for the variable in the url, then the possible values are still loaded by the app:

I think that loading these values are no longer needed considering the value is giving in the url. You find an example at https://oslo-kg-viewer.knows.idlab.ugent.be/#/106?class=%3Chttps%3A%2F%2Fdata.vlaanderen.be%2Fns%2Fhulp-dienstverlening-gedetineerden%23Aanbod%3E.