Inconsistent behavior in Flow 0.66.0

[ajs139]

Posting without the usual level of information needed, but it seems like Flow is ignoring some files some of the time, and not others. It will provide errors on a file, but any change to the flow typing of that file will cause the errors to disappear. Even if they are to completely invalid values such as const n:number = '1';. Restarting Flow server does not fix the issue, additionally running the tests on a different machine passes. Adjusting sharedmemory.dep_table_pow and sharedmemory.hash_table_pow seems to have no affect.

Additionally, although probably unrelated, the startup time now takes significantly longer - up to a minute for the "Loading Libraries" step. This is compared to 0.56.0 which was the prior version being used.

[ajs139]

Closed in favor of facebook/flow#5860