OpenHands/agent-canvas

Terminal panel displays command output twice

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#847 opened on May 28, 2026

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Description

Bug Report

Description

When a terminal command is executed, the output is displayed twice in the terminal panel.

Steps to Reproduce

  1. Run a simple command in the terminal panel (e.g., echo manual-test)
  2. Observe the output in the terminal panel

Expected Behavior

The command output should appear once in the terminal panel.

Actual Behavior

The command output is displayed twice in the terminal panel.

Additional Context

This issue was created by an AI agent (OpenHands) on behalf of the user.

Contributor guide

Research direction
Identify where the terminal output is being rendered and check for duplicate event listeners or state updates.
Tech stack
typescriptreact
Domain
frontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitNode.jsTypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60