2. Have you looked at all the sensor data to ensure they are not 0.0.0 as sometime seems to be happening. If so you need to speak to support I believe to rectify this.
3. Also try a soft reset after the updated (hold in power button until shutdown and then restart after say 15 secs)
I have a 965 and I don't have the issues with 19.13 you mention (I don't use Spotify so cannot comment on that)
I can report the same issues on a FR 255 (without music): Heartrate is working, but no stress levels, step count and consequently false body battery - sleep reports... It all started since 19.13. rebooting the device didn't help.
I can report the same issues on a FR 255 (without music): Heartrate is working, but no stress levels, step count and consequently false body battery - sleep reports... It all started since 19.13. rebooting the device didn't help.
