JetBrains ACP hangs indefinitely on windows

[EnoroF]

Description

The JetBrains ACP invocation gets stuck in the “thinking” state indefinitely. This happens with any ACP-enabled IDE.

2026-01-10T115724 - log.log

Plugins

Jetbrain AI Assistant ACP

OpenCode version

1.1.11

Steps to reproduce

1. Configure the ACP in Jetbrain follow the Doc.
2. Switch to AI Assistant in Jetbrain.
3. The OpenCode Agent can be found and the model available is shown correctly.
4. Ask any thing about the code
5. No response from OpenCode anymore.

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

[github-actions]

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

• [BUG] OpenCode just hangs randomly after receiving instructions #2940: [BUG] OpenCode just hangs randomly after receiving instructions - Reports OpenCode hanging indefinitely in various scenarios
• Sessions hang indefinitely when Task tool spawns subagents via REST API (opencode serve) #6573: Sessions hang indefinitely when Task tool spawns subagents via REST API - Describes sessions getting stuck in "busy" state
• lsp bug: edit tool stalls after first diff; assistant hangs #6959: lsp bug: edit tool stalls after first diff; assistant hangs - Shows assistant hanging after edits in similar scenarios
• Is opencode web broken? #4402: Is opencode web broken? - Reports thinking state hanging indefinitely with web version
• Getting stuck at 'Running commands' > Shell > undefined #5662: Getting stuck at 'Running commands' - Reports hanging at shell execution stage

Feel free to ignore if none of these address your specific case.

[anna239]

hi! I'm from JetBrains and working on the ACP integration in IDE. I can check if this hanging is related to the IDE integration, but I'll have to see the logs for that. Would it be ok for you to share acp logs? The action to get the logs is in AI Assistant's menu in the top right corner. You can share the logs directly with me via anna.zhdan@jetbrains.com or create an issue in our youtrack instance and attach the logs there https://youtrack.jetbrains.com/newIssue?project=LLM

[EnoroF]

hi! I'm from JetBrains and working on the ACP integration in IDE. I can check if this hanging is related to the IDE integration, but I'll have to see the logs for that. Would it be ok for you to share acp logs? The action to get the logs is in AI Assistant's menu in the top right corner. You can share the logs directly with me via anna.zhdan@jetbrains.com or create an issue in our youtrack instance and attach the logs there https://youtrack.jetbrains.com/newIssue?project=LLM

Hi, anna~

I send you the logs with e-mail, I check both log, It seems the problem from opencode, please check again.

[anna239]

Checked the logs, looks like the issue is indeed with opencode — it just doesn't stream any events after client does session/prompt request

[EnoroF]

Checked the logs, looks like the issue is indeed with opencode — it just doesn't stream any events after client does session/prompt request

yes, the opencode do not response and doesn't stream any events.

[mulehang6]

yeah, i'm getting this too. first only in webstorm,and now it's ok in webstorm but stuck in both idea and zed

[EnoroF]

yeah, i'm getting this too. first only in webstorm,and now it's ok in webstorm but stuck in both idea and zed

yeah，those IDE can integrate with other ACP agent correctly.

[dream-0708]

Has this problem been solved? I'd like to hear about the experience.

[mulehang6]

Has this problem been solved? I'd like to hear about the experience.

unfortunately not,still getting no response via acp,at least on my computer