Unless a new pre-release comes out, this is still present in Pre-Release 4.
How to reproduce:
Start a server and world in pre-release 1 or 2
Add a scoreboard objective using an emoji
Update to pre-release 3.
Possibly affected by patch of MC-226514
Error is still present in pre-release 4
Bug is still in 1.17 pre-release 3 on multiplayer.
Adam DoesStuff
Unless a new pre-release comes out, this is still present in Pre-Release 4.
How to reproduce:
Start a server and world in pre-release 1 or 2
Add a scoreboard objective using an emoji
Update to pre-release 3.
Possibly affected by patch of MC-226514