It got buried.
Months after probing Clinton server scandal, Comey's FBI had its own private email issue, memos say
The recently declassified memos show investigators found former Director Comey’s chief of staff used a private email account in furtherance of an "unauthorized disclosure" to news media.
The memos are the latest evidence that FBI agents on the front lines had serious concerns about illegal leaks and abuses of classified information allegedly involving major figures in Washington like Comey, now Sen. Adam Schiff, D-Calif., and Clinton. The efforts at investigating were repeatedly thwarted.
https://justthenews.com/accountability/political-ethics/fbi-had-its-own-private-email-problem-while-investigating-clinton