Im pretty sure there has to be INSANE amounts of lag for that to ever happen, OR a hack client and server backdoor could allow people to potentially OP themselves. Though the second is really unlikely (I mean, everyone in 2B2T isn't OP). It could be something like there's too many people on the server at once, causing so much lag that the authorization system just gives up. If that's the case then make sure you have stuff like EssentialsX, clearlagg, and NoCheatPlus to get rid of lag and secure the server. AND ADD A PERMISSIONS PLUGIN ALREADY! Whitelist the server while your configuring it to make sure no one screws something up btw. It's MOST likely a permissions glitch.
I think its the Backdoor problem
