The Alterer outed:
The original WaPo article by Devlin Barrett noted the FBI official was actually a line-level lawyer who worked under FBI Agent Peter Strzok.
At 12:15am, the WaPo article was significantly edited, two more journalists (Ellen Nakashima and Matt Zapotosky) were added to the byline. Unfortunately, no explanation or notation of the changes were given.
https://twitter.com/thelastrefuge2/status/1197813542541570048?s=21