After updating from firmware 8.00 to 9.20 recently my watch seems to not record changes to elevation.
Specifically it doesn't seem to notice decent, but it does seem to notice ascent. Which means no matter what, my watch's elevation always seems to go up, and never go down.
This is regardless if I am doing an activity or not.
On 8.00 the automatic detection of ascent and decent worked fairly OK, both while doing activities and also outside of activities.
So this is a change (regression) after updating to 9.20.