Reordering is not allowed for this resource.

[AndreyPirozhkov]

I did everything according to the instructions https://github.com/outl1ne/nova-sortable/blob/3.2.1/docs/sorting/many-to-many.md
But the navigation buttons are not available.

[KasparRosin]

Unable to reproduce with the vanilla nova setup and following the default documentation.
Most likely you have some configuration issue.

Could you post your $sortable array.