Avoid forking rootScopes for Reactor if current thread has NoOpScopes
#606
| Job | Run time |
|---|---|
| 17m 23s | |
| 17m 29s | |
| 17m 20s | |
| 17m 25s | |
| 17m 22s | |
| 17m 25s | |
| 17m 24s | |
| 2h 1m 48s |