Bug type

Regression (worked before, now fails)

Beta release blocker

No

Summary

Version: 2026.5.7
Platform: Docker (Ubuntu 24 VPS) + macOS (Hal)

Config:

"channels": {
  "telegram": {
    "streaming": { "mode": "partial" }
  }
}

Symptom: Messages arrive all at once in Telegram DMs. Logs only ever show [telegram] sendMessage ok. No preview message is created and no editMessageText calls are visible. Tested on both Docker (Lumina) and macOS (Hal) with the same result.

What was verified:

• openclaw doctor --fix → Errors: 0
• No blockStreaming in config or source
• No replyToMode set
• Private DM only (not group)
• has_main_web_app: true on bot
• Container restarted multiple times
• Occurs with both anthropic/claude-sonnet-4-5 (direct) and gauge-proxied models

Steps to reproduce

1. Install OpenClaw 2026.5.7 (Docker or macOS)
2. Configure Telegram channel with streaming.mode: "partial"
3. Run openclaw doctor --fix — confirm Errors: 0
4. Send a message to the bot via Telegram DM
5. Observe bot response in Telegram
6. Check container logs: docker logs 2>&1 | grep telegram

Expected behavior

A preview message appears in Telegram immediately after sending,
then updates in real time via editMessageText as the model generates
tokens, producing a visible streaming effect.

Actual behavior

No preview message appears. The bot is silent until generation
completes, then sends the full response in a single message.
Logs only show: [telegram] sendMessage ok
No editMessageText calls are ever made.

OpenClaw version

2026.5.7

Operating system

Docker: Ubuntu 24.04.4 LTS (Hostinger VPS, kernel 6.8.0-106-generic) macOS: Hal (MacBook Air, macOS — same behavior confirmed on both)

Install method

No response

Model

anthropic/claude-sonnet-4-5 (direct, no proxy) Also tested: anthropic-gauge/claude-sonnet-4-5 (Open Gauge proxy) Same result on both.

Provider / routing chain

Telegram Bot API → OpenClaw Gateway (Docker, openclaw-clone-51662-openclaw-1) → anthropic/claude-sonnet-4-5 (direct Anthropic API) Polling mode (long polling, not webhook) Bot: @LexKing_bot Chat type: private DM Gateway bind: lan (0.0.0.0)

Additional provider/model setup details

No response

Logs, screenshots, and evidence

2026-05-08T09:33:20.926-04:00 [telegram] sendMessage ok chat=6842450016 message=4072

Impact and severity

No response

Additional information

• openclaw doctor --fix output: Errors: 0
• Full telegram config block:
  {
  "enabled": true,
  "dmPolicy": "allowlist",
  "allowFrom": ["6842450016"],
  "groupPolicy": "allowlist",
  "streaming": { "mode": "partial" },
  "execApprovals": { "approvers": ["6842450016"] }
  }
• getMe confirms has_main_web_app: true, has_topics_enabled: false
• Grepped entire /app/ for blockStreaming in telegram-specific files — not present
• Container restarted multiple times, issue persists across restarts