Cursor rules cannot include with @

Describe the Bug

Today, when I use ctrl + I, and type @ choose rules to add cursor rule, there is no mdc file appear in the context, althought I have separately .cursor/rules for each folder backend and frontend, with each conversation, agent cannot access to mdc rule as before. Is there anyone has the same issue like this?

Steps to Reproduce

Anytime when start a new conversation, type @ and choose rules, there is a listing the mdc rule file for user chosing, but now it disappears

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version cursor: 1.2.1