Treadmill calibration broken with 14.10

I have a fenix 5s.  Since the update to 14.10 the treadmill (and likely step) calibration is incorrect.  I am able to consistently run 1.89 miles on the treadmill and the garmin records only 1 mile.  My normal 6.1 mile run each morning is tracked at about 3.6 miles instead.  I suspect this was broken with the last release as when looking at the changelog for the release treadmill calibration code was touched:

https://www8.garmin.com/support/download_details.jsp?id=11435

Changes made from version 13.40 to 14.10:

  • Improved Pairing Experience with Garmin Dual ANT+/BLE Sensors.
  • Made several code improvements and bug fixes for golf, especially CT10.
  • Fixed an intermittent issue where the device could report an incorrect treadmill calibration.
  • Fixed an issue where the hourly alert was off by minutes when manually changing time on device.
  • Fixed an issue where stroke data during a rowing activity was not available on Varia vision.

Several others are having this problem with 14.10:

https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/fenix-5-series/171386/treadmill-calibration-seems-broken-on-software-14-10-fenix-5x?tempkey=a242f356-79c5-4c26-8f71-994126aa38fe

I have a support case opened with garmin (Reference ID: 14805131K1) but it's getting very little traction.