All three active React 19 release lines got a coordinated patch on June 1 for the same bug: missing FormData entries in Server Actions, a regression that crept in with 19.0.6, 19.1.7, and 19.2.6 respectively. The fact that the same fix landed across branches the same day suggests the team caught it quickly. If you're on any React 19.x line and using Server Actions with FormData, this patch is the one to take.