When playing on a LAN world with two instances, where the hoster (A) has a different language than the one joining (B), item names in the /enchant error message are translated via the language of A.
Steps to reproduce:
Open a world to LAN on instance A with Language A.
Join the world form instance B.
Set the language in instance B to a different Language than A.
Get any item in the main hand of player B.
use the /enchant @p lure command to try and enchant the item with an unsupported enchantment (for example lure on anything but a fishing rod.)
See that the item name is in language A while the rest of the message is in language B.
Example using upside down English on instance A and normal English on instance B:
[media]
Duplicate of MC-170355.