Do you mean on the frontend or the admin? On the admin, it’s pretty well documented that NMR will conflict with other menu manipulating plugins… and how to patch that is covered in the FAQ.
Yes, I mean the front-end.
It’s been working without issue for at least a year now without any issues until the most recent update?
Thanks
Haven’t made a front end change since 1.6.0. Are you sure the update was not in mega menu or your theme?
You can try an old version from here:
https://wordpress.org/plugins/nav-menu-roles/developers/
If an old version resolves your issue let me know so I can take a closer look.