Problem

Some messages from the agent are not delivered to Telegram when:

1. A Heartbeat arrives
2. A User message is already queued/arrives at the same time
3. The agent responds to both

The Heartbeat response appears to "overwrite" or cancel the normal reply.

Evidence

Screenshot showing missing message in chat:

• Agent sent a message about an upcoming workshop (visible in agent logs/session)
• Message never appeared in Telegram chat
• User confirmed: "da ist nichts" (nothing there)

Config

{
  "channels": {
    "telegram": {
      "enabled": true,
      "dmPolicy": "pairing",
      "groupPolicy": "open",
      "streamMode": "partial"
    }
  }
}

Hypothesis

The streamMode: "partial" may cause race conditions when multiple responses are being streamed/edited simultaneously. The in-place message editing could fail silently.

Expected Behavior

All agent messages should be reliably delivered, even when Heartbeats and user messages arrive close together.

Environment

• Clawdbot version: 2026.1.24-2
• OS: Linux 6.8.0-90-generic (arm64)
• Node: v22.21.0
• Telegram: DM with paired user

Workaround

Using the explicit message tool (action=send) appears to work reliably. Only "normal" replies seem affected.