Terminal stalling + artifacts in a terminal like "qc" or 'с'

Describe the Bug

can you please fix it already? i have this bug for 1 month already. People are complaining about it since April(at least). I can’t use cursor guys. How do you suppose i will continue to purchase Your Product if i can’t use it? If there is no any stalling or artifacts into console - then it’s serrialization (Request ID: 6cc79f43-094c-457c-ae13-56291aef2255
ConnectError: [internal] Serialization error in aiserver.v1.StreamUnifiedChatRequestWithTools
at vscode-file://vscode-app/h:/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7246:383704 ). How can i not think that this is kind of artificial restriction. Just say that there is no real “unlimited auto” - that would be okay. But not these (as i feel right now) artificial limitations by bugs. You have made so great product, but these micro bugs are ruining everything. How can they exist 180+ days, i dont understand

Steps to Reproduce

just chat with agent

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.8.0-pre.15.patch.0 (system setup)
VSCode Version: 1.99.3
Commit: 3090cd6be5a233adab3c0f1757da8417055d2320
Date: 2025-10-05T08:09:43.422Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Yes - Cursor is unusable

Thanks for reporting this. I understand the frustration with these persistent issues.

For the serialization error in agent chat, could you please run network diagnostics?

  • Go to Cursor Settings → Network → Run Diagnostic

  • Share results

For the terminal artifacts (“qc” or ‘с’ characters appearing):

  • What exact actions trigger this? (specific commands, terminal usage patterns?)

  • Screenshots would be helpful

  • Does this happen in Cursor’s integrated terminal only? Or in normal terminal as well?

Also worth trying: You’re on a pre-release version (1.8.0-pre.15.patch.0). Could you test on the stable release to see if issues persist? Settings → Beta → Default

1)netDiagnostics - all is ok everywhere. Agent - [2025-10-09T08:42:35.183Z] Starting stream [2025-10-09T08:42:35.184Z] Pushing first message [2025-10-09T08:42:36.325Z] Response: ‘foo’ in 1141ms [2025-10-09T08:42:36.827Z] Pushing next message [2025-10-09T08:42:37.488Z] Response: ‘foo’ in 1163ms [2025-10-09T08:42:37.989Z] Pushing next message [2025-10-09T08:42:38.846Z] Response: ‘foo’ in 1358ms [2025-10-09T08:42:39.353Z] Pushing next message [2025-10-09T08:42:40.208Z] Response: ‘foo’ in 1362ms [2025-10-09T08:42:40.711Z] Pushing next message [2025-10-09T08:42:41.350Z] Response: ‘foo’ in 1142ms [2025-10-09T08:42:41.350Z] Result: true.

about “qc” and ‘с’ - when terminal stalls and you manually press Shift+ Cancel, or, sometimes, when agent skipping terminall comands itself. Ain’t used Cursor CLI much - but haven’t seen it there yet. At screenshot - it was ok when i skipped. after this ‘q’ - terminal went itself to the new string. But it was very ok when You made that you can’t write into agent’s terminal - so there weren’t any artifacts that prevent next agent’s execution.

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