Users nameplates in mirror do not correctly reflect the same way you Phyiscally see them compaired to the mirrors copy, The mirror copy follows diffrent Opacity or seems to light a diffrent way compaired to the real nameplate.

Apon enabling the world under the mirror layers this issue does disappear, But during raves or partys, The Opacity is still a problem even when in popular worlds.

1: Mirror set to UI+Remote players, no world, Nameplate opacity to 0% (will change)

2: have a friend with their earmuffs on, Tilt the mirror to where you can see both nameplates, Real and mirror variant of it.

3: Play with Opacity slider on the nameplate settings to see effect