Describe the Bug
Before the recent updates these past 2 weeks(ish) I could tag fils in rule (.mdc) files the same way I do in chat with the @ sign with the same UI and everything, but this is no longer working.
In fact when I do @ it was suggesting github users. I turned this feature off and still no luck tagging files cursor-style.
I also noticed in other rule files that I have tagged files in the past, the custom cursor UI with @filename inline like it looks like in chat are all gone and have all been converted to [FILENAME](mdc:FILENAME).
Steps to Reproduce
Make a new rule file in the settings
Try to add context with @
Expected Behavior
It lets me tag files like it always has/like it does in chat/like it says I can in the docs (Rules | Cursor Docs)
Operating System
MacOS
Current Cursor Version (Menu → About Cursor → Copy)
Version: 1.4.3
VSCode Version: 1.99.3
Commit: e50823e9ded15fddfd743c7122b4724130c25df0
Date: 2025-08-08T17:34:53.060Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.6.0