I think most things should be working in 1.14, please report bugs as you find them, if you're brave enough to update your server. For what it's worth, 1.14 currently seems a little unstable to me.

Changelog:
- Fix NMS bindings for 1.14
- Add CheckVelocity action
- Removed Vault-based "fancy" item name feature, since the feature it relied on has been removed from Vault
- The broom item was changed in the resource pack to not have an offset