18.26 sleep tracking, hrv, hr major issues over night

Got 18.26 and for two nights in a row, my sleep said between 1 and 4 hours with tracking failing mid sleep - I slept for 7+ hours both nights. HR only has a handful of readings throughout the night, while normally this is a straight line and consistent tracking. Same with HRV, only a few sporadic readings throughout the night.

I just updated to 19.09. Hopefully this fixes it.