From: serb1tar

Every time this addon updates for me, I lose the colored names and guilds of everyone in the tooltip. I have to find my old Interface folder and copy my older version back over it. Have had to tell curseforge not to update it so I stop losing colors.

EDIT: It was the ClassColors addon breaking it! Disabled that and now it works fine. Newer versions must clash with it somehow.

Source: https://legacy.curseforge.com/wow/addons/tiptac-reborn?comment=318

ClassColors addon: https://www.curseforge.com/wow/addons/classcolors

Improved using custom class colors if ColorMixin methods are not available. Will be included in the next release.