Fenix 5 Software Version 15.00 results in inaccurate active and total calorie estimates

My fenix 5 after updating version 15.00,  it stopped reading Arabic language 

Similiar here - 315 active calories with just 3800 steps, no activity, just teaching at school. Normally, I should have about 1/4 to 1/3 of those.

same issue for me; calories too high

same for me . 3200 step -1557 total cal-353 active.no work-no run.i think is high

Has somebody with firmware 15.20 experienced that the calories miscount is solved?

Same here. Contacted support with no reply until now.

What doesn't work:
Factory reset

What works:
I made a rollback to Firmware 14.20 using the backdate GCD (http://gawisp.com/perry/fenix_D2_tactix/fenix5_1420.gcd). And magically, calories are back to normal.

I'll stay on 14.20 for now until I get a confirmation that the calorie bug is fixed. Calorie measurement and therefore MyFitnesspal sync are totally crap for the last 5 weeks.
I hope Garmin fixes this. If not, this would be the second device with introduced bugs leaving users alone with.

Nope. I have version 15.20 and still very high and inaccurate calories count.