The firmware keeps a node name in 32 bytes, but the sender prefix and the @[Name] mention matched only 20 characters. A longer name stayed in the body: the transcript showed no sender for it, and its reactions showed as new messages. Found on hardware with "Hazelwood r0b3.Anduril" (22 characters). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>