No Left/Right stats from dual sided PowerTap P1 pedals recorded by my Forerunner but records fine on my Garmin 510. Both connected via ANT+

I have Powertap P1 dual-sided pedals and I'm connecting to both 510 head unit and Forerunner 255 watch via ANT+. After uploading both I can see L/R balance, Torque Effectiveness and Pedal Smoothness from the 510 but not from Forerunner. Is there something I'm doing wrong or does the watch not record those stats for some reason?