Apple Watch support told me to update to watch os 10 which I really didn’t want but since then this bug didn’t happen again (before it happens like every two weeks). But you already updated so maybe try to remove and pair the Watch again?
I have / has the exact same problem on my Apple Watch SE!
Apple Watch support told me to update to watch os 10 which I really didn’t want but since then this bug didn’t happen again (before it happens like every two weeks). But you already updated so maybe try to remove and pair the Watch again?