Having the exact same issues with sleep since updading to win 10 1903 on June 19.
Tried everything. Settings did not change, does seem to be a glitch that i find annoying.
one thing i read is that hd should be set lower than the sleep number. That didn’t work.
deleted old verson 1803 so cant roll back. This is frustrating.
i can manually put it into sleep but what is the pont?
help please