On May 5th we released a network update to add /skin, better 1.13+ support and other improvements, you can find the full list of changes down below.
- Added /skin set command to set a custom skin
- Fences, chests, glass and doors now work properly on 1.13+ clients
- Factions anti-xray improved
- KitPvP anti-cheat improved
- Fixed a bug where people could get stuck in nether portals
- Fixed a bug where people could get stuck in a server with the message kicked for flying
- Other minor bug fixes