I can't seem to get this to work on my server, works fine in SSP, but nothing on the server, both sides have the mod (in case it's required). Am I missing something or is this a bug?

Minecraft: 1.12.2
Forge: 2641
Mods: list.txt

It's probably my fault, I updated it to 1.12.2 and never checked to see if it would world for SMP worlds, thanks for the heads up.

EDIT: I'll work on it when I get home from work tonight.

The same problem to me, Its does work on server,but works fine in SSP.I am plugin server.

Finally got around to fixing Multiplayer, so sorry it took so long.

https://github.com/GenuineSounds/World-Tooltips/releases/tag/1.3.0

You can also find it on Curse.