Bug type

Behavior bug (incorrect output/state without crash)

Beta release blocker

No

Summary

When OpenClaw sends a large or long-form response in Teams, the message content
appears twice — once in a white/light card, and again immediately below in a
darker grey card. Both cards contain identical or overlapping content.

This appears to be triggered specifically when the response is large (e.g.,
structured markdown with multiple sections, headers, bullet lists, and tables).
Shorter plain-text replies do not seem to trigger the duplication.

Steps to reproduce

1.Ask OpenClaw a question that produces a large, structured response
2. Receive response in Teams DM
3. Observe: the full formatted response appears once in a white card,
then the same content appears again in a grey/darker card immediately below

Expected behavior

Response should appear exactly once, regardless of length or formatting.

Actual behavior

Response is duplicated — same content rendered in two back-to-back
message cards. Occurs consistently for large responses

OpenClaw version

2026.03.24

Operating system

Ubuntu 24.04

Install method

docker

Model

anthropic/claude/sonnet 4-6

Provider / routing chain

anthropic

Additional provider/model setup details

No response

Logs, screenshots, and evidence

Impact and severity

No response

Additional information

No response