"Plans" corrupt when “save” it to your repo - breaking "Build" button from working

Support Bug Reports
3

Hey, thanks for the report. This looks like an issue we fixed in 2.3.9, but you’re on a newer version (2.3.41), so it could be a regression.

A similar bug showed up in this thread: Latest update broke Plan TODOs. Todo items would disappear and Build would break. The root cause was that the plan creation tool tried to write to a file with the wrong slug name after saving.

To dig in further, can you share:

  • The Request ID (top-right chat menu > Copy Request ID)
  • Which model you’re using (Opus 4.5, Sonnet 4.5?)
  • Does this happen for plans in the default .cursor/plans/ folder, or only when you move them into your own /sprint folders?
  • Console logs from Help > Toggle Developer Tools > Console (when you open the “broken” plan)