Describe the Bug
This new Cursor update is really dangerous for your projects — be very careful.
I use Cursor regularly in my development workflow, especially for more complex projects like this one, where I often rely on AI assistance to resolve issues. Normally, everything works smoothly. However, since the latest update (starting yesterday), things have changed drastically:
The AI has become confused, frequently introducing critical errors.
It is breaking code silently, without any warning.
The timeline is behaving erratically.
Checkpoints and versioning are not working as expected.
I’m not sure exactly what caused the issue, but after I allowed the AI to “fix” a small bug, it ended up introducing the worst error I’ve had in the entire project.
One of the major problems is that some AI sessions are deleting the entire contents of files, rewriting them from scratch. And worse — Cursor marks the file as “new”, even if it overwrites an existing one.
For example, if I have a file called api.ts, the AI might wipe everything from it and replace it with a completely unrelated, overly simplistic code. Then Cursor shows the file as new. If you hit “Reject”, the entire original file is gone — unrecoverable.
It’s hard to explain fully, but just be very cautious. Since this last update, the AI coding assistant has become high-risk and unstable, and can seriously compromise your work.
Steps to Reproduce
I don’t know
Operating System
Windows 10/11
Current Cursor Version (Menu → About Cursor → Copy)
The last one version
Does this stop you from using Cursor
Yes - Cursor is unusable