Bug Report

Type /ver NametagEdit and post the output.
/ver doesn't work at all

What version of Bukkit/Spigot/PaperSpigot are you using? Type /ver
/ver doesn't work at all

What plugins are you using? Type /plugins
AdvancedPortals, ajStartCommands*, AltDetector, BanItem, BuycraftX, ChatFilter, Citizens, CommandToItem, CoreProtect, DBAPI*, Denizen, Essentials, EssentialsChat, EssentialsSpawn, ExcellentCrates, ExcellentEnchants, FastAsyncWorldEdit (WorldEdit), GrimAC, HolographicDisplays, InvisibleItemFrame, InvSeePlusPlus, InvSeePlusPlus_Give, ItemEdit, LibsDisguises, LoginSecurity*, LPC, LuckPerms, MineResetLite, MyCommand, MythicMobs, NametagEdit, NexEngine, NoPlugins, PlaceholderAPI, ProtocolLib, PvPManager, SafeTrade, SecondThreadAPI*, Sentinel, Shopkeepers, ShulkerPacks, SkinsRestorer, Spleef*, SuperbVote, TabList, UltimateAntiBot*, UltimateAutoMessage, ViaBackwards, ViaVersion, Votifier, WorldGuard, WorldGuardExtraFlags

Please explain your issue. How do you trigger it?
Group prefixes appear on tab after NTE is reloaded but disappear as soon as the player types in chat, reverting to plain white text with no prefix.

Are there any errors in the console? Please use: https://pastebin.com
No errors in the console.