Hey, thanks for the report. This is a known regression in 2.1.47-2.1.48 on Windows affecting Plan Mode: Build doesn’t trigger and plans may be saved outside the workspace.
Details and tracking:
- Plan Mode build not working: Plan mode "build" not working in chat
- Similar symptoms: Plan mode - not expanding or Building
- Expected plan saving behavior: Planning | Cursor Docs
What to try now:
- Ask the agent in chat to build the plan via text instead of clicking Build
- Launch with extensions disabled:
cursor --disable-extensions - Check if a plan file appeared here:
C:\Users\<User>\.cursor\plansand, if needed, move it manually to<workspace>\.cursor\plans
Could you send:
- Exact repro steps
- Errors from Help > Toggle Developer Tools > Console after clicking View Plan and Build
- Confirm whether it reproduces on another model besides GPT-5.1 Codex
- Additional Request IDs from chat for failed attempts
Let me know if the workarounds help.