Using @a[nbt={Sleeping:1b}] does not target all sleeping players as expected in snapshots.

Put the summary of the bug you're having here:

Using @a[nbt=

{Sleeping:1b}

] does not target all sleeping players as expected in snapshots.

What I expected to happen was...:
@a[nbt=

{Sleeping:1b}

] would target all sleeping players.

What actually happened was...:
Commands involving the target selector do not successfully target all sleeping players.