In build 791, the apparent position of a user's voice when speaking fails to track their head position, instead it seems to come from a point a little beneath their nametag. I only experienced this bug from a user using FBT (and me also using FBT, they experienced the same bug with my voice). it may still work using 3-point tracking. Voice still follows in the XZ plane, just not vertically.
Steps to reproduce:
  1. Find somebody using FBT.
  2. Ask them to crouch or lay down, or use playspace mover to move vertically up or down.
Expected:
Their voice sounds like it comes from their avatar's head position.
Actual:
Their voice comes from their head position as if they were standing upright regardless of where their avatar's head is.