The Jiggle FOV option is not public, the one you’ve tried out is Jiggle Rotation and it does not affect the FOV at all. So that’s not the problem.
AFAICT its very common to not have symmetry left and right, I can tell you that all my WMR headsets advertise different values for L/R FOV. I’m also pretty sure I’ve seen asymmetric values with other vendors. It causes no visual issues for me.
Can you follow these instructions here and send me the resulting trace?
Thanks.