Cursor Plan wipes plan when I ask it to make adjustments

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

When I ask cursor to write a plan, it prints an md file with requirements. However when I ask it to make updates or add info to the plan, sometimes it’ll delete the plan and add trailing white spaces to other files randomly.

Has anyone else ran into this bug?

Steps to Reproduce

plan a feature. ask it to make changes. Then the prd will get corrupted and lots of extra white spaces will be added to other files.

Expected Behavior

Draft a plan. Ask it to make updates afterwards a couple of times.

Screenshots / Screen Recordings

Screenshot 2025-12-16 at 10.11.39 AM.png
Screenshot 2025-12-16 at 10.11.39 AM.png890×1398 29.9 KB

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

cursor version-> 2.2.2

For AI issues: which model did you use?

Auto

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

2

Hey, thanks for the report.

This is a known issue with updates in Plan mode. The team is already working on a fix. Similar discussions:

We need debugging data:

  • Is this a new chat or a long conversation
  • 2-3 Request IDs from attempts where the plan got wiped and where whitespaces appeared
  • Minimal repro steps and a small repo or files with before/after .md diffs
  • List of installed extensions and whether format-on-save is enabled

Workarounds for now:

  • Start a new chat and save a copy of the plan .md before edits
  • Apply changes through Review with manual diff approval
  • Check if it reproduces on a new project branch

Please share the requested info and I’ll pass it to engineering.

3

Here is the request id: 7d6e21c1-e6fb-4cb0-9c84-efee25db0e1b

It was a long conversation. And the plan was large too. I believe that was a big contributor.

I’m not sure if format-on-save is enabled. Where would I find that?

I managed to restore the plan and build the feature (though troubleshooting bugs rn).