Some of the text output in the chatbox is not displaying correctly.

nothing

Use the 1.15.2 version of the client to connect to the 1.20.1 version of the server.
1. Enter any plugin command and observe the text display.

The text should display correctly.

[X] Via plugins are only running on EITHER the backend servers (e.g. Paper) OR the proxy (e.g. Velocity), not on both.
[X] I have included a ViaVersion dump.
[X] If applicable, I have included a paste (not a screenshot) of the error.
[X] I have tried a build from https://ci.viaversion.com/ and the issue still persists.

ViaVersion / ViaBackwards