St. Brown reverted back to the Packers' practice squad Monday, per the NFL's transaction log.
St. Brown was elevated to the active roster for the second straight week with Marquez Valdes-Scantling (hamstring) on injured reserve. The 25-year-old wideout played 12 offensive snaps against the Bengals and didn't record a target, but he did register an assisted tackle on Green Bay's kickoff unit.