Telegram plugin: inbound notifications/claude/channel silently dropped and not delivered to session

Description

When using the Claude Code Telegram plugin, the MCP server successfully receives inbound messages from Telegram and sends notifications/claude/channel MCP notifications, but Claude Code silently drops them — the notifications are sent successfully by the MCP server but are never surfaced to the conversation. No error is logged on either side.

Steps to Reproduce

1. Install and configure the Telegram plugin (claude --channels plugin:telegram@claude-plugins-official)
2. Send a message to the Telegram bot
3. Observe that Claude Code does not receive or respond to the message

Expected Behavior

Inbound Telegram messages should be delivered to the active Claude Code session.

Actual Behavior

Notifications are silently dropped. The session remains unresponsive to incoming Telegram messages.

Related Issues

This issue has been reported multiple times:

• #36431
• #36802
• #37663
• #38534

Environment

• Platform: macOS
• Claude Code version: 2.1.107