Instinct 3 Solar stuck in high power mode

Firmware version:

This has been reported with 10.36, but not with 9.21

Software affected:

Any Connect IQ watch face, including Garmin's ones

Expected behavior:

1. When wrist is raised (watch facing up), watch enters 'high power mode' (onExitSleep() is called, then onUpdate() is called every second)

2. After about 10 seconds, watch automatically enters 'low power mode' (onEnterSleep() is called, then onUpdate() is called every minute)

Actual behavior:

1. When wrist is raised, watch enters 'high power mode'

2. Watch remains in 'high power mode', automatic switch back to 'low power mode' does not occur

3. Watch enters 'low power mode' only after wrist has been lowered (watch facing down)

Impact and severity:

This causes significant excessive battery drain (reportedly up to 100% increase) in Connect IQ watch faces and it can't be worked around by the watch face developer.

Supporting information:

A user report posted here https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/instinct-3/423711/infinite-gesture-on-issue-on-instinct-3-solar-firmware-problem