Hey, thanks for the report. This is a known issue. The agent sometimes ignores rules from MDC files. The team is aware.
To pass details to engineering, we need a couple things:
- The Request ID from the chat where the rules were ignored: chat menu (three dots on the right) > Copy Request ID
- Which mode are you using, Ask or Agent?
- Which model, Auto or a specific one?
- The path and approximate contents of the MDC files (if you can share)
Related threads: Cursor ignoring .cursorrules Cursorrules getting ignored
Can you share the Request ID and the details?