Also, you didn’t specify whether you were using Automation (aka rubber banding keyframes) to do your track panning or doing it on a clip by clip basis in the mixer. You may need to make your Automation keyframes visible in your timeline to see what is really going on.
If you are set to Direct Out in the Audio Tool, everything is mono..there is no panning. Is someone set that way?
Also, there is an Audio setting in the User settings where you can choose to center pan everything or leave them L/R. check that someone’s user settings are not configured for center pan.