Selecting any .md (Markdown) file causes Cursor IDE to freeze completely

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Hey, thanks for the report. This looks like a known issue where the breadcrumbs bar gets stuck in an infinite loop while parsing Markdown headings.

Try this:

  1. Settings CMD + , > search for “breadcrumbs” > turn off Breadcrumbs: Enabled
  2. Try opening the .md file again

This helped other users with the same symptom, more details here: Cursor crashes when I try to open the plan file - #7 by Marek_Fraczyk

If the issue still happens after disabling breadcrumbs, also check:

  • Run cursor --disable-extensions from Terminal and open the same file. If it works fine without extensions, one of them is causing the freeze.
  • Crash logs: CMD + Shift + P > “Developer: Open Log File” and paste what you see right before the freeze.

Let me know how it goes.