Did pmg-smtp-filter catch a glitch?

PMG version 8.1.5

Hello everyone, we caught a bug\glitch with an empty whitelist.
At a certain point we noticed that there was more spam and the reason was the empty whitelist, after rebooting the problem went away.

Did pmg-smtp-filter catch a glitch?

CLI Whitelist:
root@mail:/etc/mail/spamassassin# pmgsh get /config/ruledb/who/38/objects
200 OK
[]
root@mail:/etc/mail/spamassassin# pmgsh get /config/ruledb/who/37/objects
200 OK
[]

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