Problem/Bug Cannot run bukkit:help unless OP

Every time a non-op player tries to run "/bukkit:help [topic]" (they do "/help", but there's an alias in commands.yml), it says in chat "No help for [topic]", even if [topic] is not even provided. Even if the group has the perm node "bukkit.command.help" explicitly defined, it won't work. It will only work if the player is an operator (or executed from console).

Does anybody know anything about this?

The server runs Paper build #102 (we keep updating it almost daily, so it will change by tomorrow). If you need me to provide any additional info, do ask me.