Since firmware version 12.* my watch very often does not show stress level for the last night and the morning, meanwhile garmin connect app shows this data (I had my watch on me during that time). On the photos one can see that watch shows no data for 10:00-13:00 (actually the graph is empty from midnight till 13:00) while the app shows stress from 8:00 - till 12:00.
13.19 did not fix the issue.
