It seems there is again battery drain with v.21 using third party watchface. I am checking the issues.
I have my third Fenix 5 now for almost a year as the first two of them were replaced under waranty due to huge battery drain in combination with the corroding pin is (they completely disappeared). This last watch finally has a very satisfying battery of around 5,5%/day. I alway use the ActiFace facewatch on all watches I had, so using a third party watch face. So even with this watch face I have a good consumption. Till V21 appeared and was installed on my watch. Normally I have auto update turned off, but apparantly now it was on again. Battery consumption raised to 16%/day and I thought; Garmin did it again... But after 2 recharges the consumption came back to the 5,5% again, I keep my fingers crossed. I made a backup of the GUPDATE.GCD file V21 in case a future update might ruin something again, at least I can downgrade again to a working version. I had the same issue with my Edge Explore where the last version 5.20 triples the consumption, so I keep it to 5.10.