Long-running shell commands (e.g. Gradle build) hang even after “BUILD SUCCESSFUL”

[universe-st]

Description

Describe the bug
When executing a long-running shell command (e.g., an Android Gradle build), the process frequently hangs even after the command has completed successfully. The output clearly shows BUILD SUCCESSFUL, yet the task remains stuck and never returns control. It stays in this state for a long time until I manually pause the execution and ask the model to continue.

To Reproduce

1. Issue a time-consuming shell command, such as ./gradlew assembleDebug.
2. Wait for the build to finish normally.
3. Observe that the final output confirms success, but the process does not exit – it just hangs.

Expected behavior
Once the shell command finishes, the process should exit immediately and control should be returned to the conversation so that the workflow can proceed without manual intervention.

Environment:

• opencode version: v1.14.30
• OS: Windows 11
• Shell: powershell
• Command type: long-running build tasks (Android Gradle, but likely reproducible with other long commands)

Additional context
This happens very consistently with time-consuming shell commands and severely interrupts the flow, requiring a manual pause every time. It is not specific to a single project or build command.

Plugins

No response

OpenCode version

v1.14.30

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• The OS and Shell fields in the description still contain unfilled placeholder text ([please fill in, e.g. macOS 14 / Ubuntu 22.04] and [e.g. zsh, bash]). Please replace these with your actual OS and shell information.

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

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This issue might be a duplicate of existing issues. Please check:

• bash tool hangs when command spawns background child processes #20902: bash tool hangs when command spawns background child processes (very similar symptom — bash tool hanging; includes root cause analysis)
• Bash tool hangs with continuously-outputting background processes #22012: Bash tool hangs with continuously-outputting background processes (related hanging behavior with long-running background processes)

If you believe this was flagged incorrectly, please let a maintainer know.

[github-actions]

Thanks for updating the issue! It now includes all the required information — a clear description, reproduction steps, expected behavior, and environment details. Everything looks good.

[SkipXS]

I have the same issue in 1.14.33.

Windows 11 Pro
PowerShell 7.6.1
Git for Windows MSYS tools

If you need a log or something I'd be happy to provide whats needed.

[gnahz77]

I encountered the same issue, and it doesn't only occur in opencode.
Some related information I found: Troubleshooting "Too long with no output" on Windows with gradlew.bat

Besides terminating opencode, there is a temporary workaround for this problem: kill the Java process in Task Manager