Field type select does not support sortable.

[rogierkoppejan]

Looking at the code this isn't implemented at the moment, hence I guess it is a documentation issue. However, sortable: true does not work as described in the documentation (it is in 3.x).

[bobdenotter]

Under the hood, the <select> element uses this: https://vue-multiselect.js.org

I'm afraid it doesn't support making the items sortable. I'm not sure yet how we should fix this. 🤔 💭