Bug Report

Type /ver NametagEdit and post the output.
NametagEdit version 4.4.10

What version of Bukkit/Spigot/PaperSpigot are you using? Type /ver
This server is running Paper version git-Paper-655 (MC: 1.13.2) (Implementing API version 1.13.2-R0.1-SNAPSHOT)

What plugins are you using? Type /plugins
Plugins (6): BungeeChannel*, LuckPerms, MiaoChat, NametagEdit*, PlaceholderAPI, ThePit

Please explain your issue. How do you trigger it?
I set the RefreshInterval to 5, but every time I refresh, it will cause a short name without any format. Maybe you can increase the cache to solve this problem.
https://i.loli.net/2021/05/23/kjHvR2uh59wqtcr.gif

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