I use Shopkeeper, although i turn on show-name-template and always-show-name-template, but shopkeeper name is auto hidden sometime

Config Shopkeeper:
https://pastecode.dev/s/g1t0611v
Version Shopkeeper: 2.23.0

Version server: This server is running Leaf version 1.21.1-DEV-ver/1.21.1@1f7276d (2024-10-13T06:16:26Z) (Implementing API version 1.21.1-R0.1-SNAPSHOT)

Screenshot:

I cannot reproduce this on the latest Spigot 1.21.1.

But either way: The always-show-nameplate setting controls whether to set Minecraft's CustomNameVisible flag. On certain Minecraft versions, this flag is known to not have worked as expected, so it is up to Minecraft to "implement" the behavior of this entity flag (if the flag were to stop working, I do not intend to manually fake entity nameplates e.g. by manually implementing them via holograms or similar). But at least for 1.21.1, it appears to work fine for me.

Check if the entity has that flag. If not, check that the setting is really enabled, and also make sure that no other plugin on your server is somehow messing with the entities. Also make sure that these shops have non-empty names.

If you have concrete steps with how I can reproduce the issue with only the Shopkeepers plugin on an up-to-date Spigot server, I can look into this again.