shareReplay can't unsubscribe

[ntduan]

Bug Report

Reproduction

const observable = Observable.create(observer => () => console.log('unsubscribe')).pipe(shareReplay(1))
const sub = observable.subscribe(v => console.log(v));
sub.unsubscribe()

not log unsubscribe

Expected behavior
log unsubscribe

Environment

• RxJS version: 6.3.3

Possible Solution
rxjs5 is work

[cartant]

Closing this because it's a known issue and has been addressed, but the PR has not yet been merged. See #4059