Diff View, no diff

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

In Agent Window, when viewing a file with changes, no changes seen with or without “Diff View” toggled

Steps to Reproduce

  1. run a cloud agent
  2. click a file in the “Changes” tab to open that file in a new tab
  3. no diff visible on the file
  4. toggle “Diff View” (action dropdown top right)
  5. a second column of row numbers appears but still no diff

Expected Behavior

diffs everywhere

Operating System

MacOS

Version Information

Version: 3.19.13 (Universal)
VS Code Extension API: 1.128.0
Commit: dd066f332fcea7382764400fde902f61920648d0
Date: 2026-09-04T17:41:16.065Z
Layout: Agent Window
Build Type: Stable
Release Track: Default
Electron: 42.10.0
Chromium: 148.0.7778.280
Node.js: 24.18.1
V8: 14.8.178.38-electron.0
xterm.js: 6.1.0-beta.291
OS: Darwin arm64 25.3.0

Does this stop you from using Cursor

No - Cursor works, but with this issue

Hey @gerbz, thanks for the report!

That’s expected right now, not something on your end: the per-file Diff View toggle compares against your uncommitted changes only, and a cloud agent commits its work as it goes, so there’s nothing uncommitted left to highlight (hence the extra gutter but no diff).

To review a cloud agent’s changes in the meantime, use the Changes tab directly, each file card shows the full added/removed lines, or open the agent’s PR for the complete diff.

We’re aware of this on our side and I’ve let the team know. I’ll follow up here if there’s an update.

This is still driving me nuts:

  1. I can’t make edits from the changes tab, which is why im reviewing it
  2. I’m clicking a file FROM the changes tab, I expect that show the same diff
  3. There’s often syntax hi-lighting errors in the changes tab. Particularly PHP code. If I expand to show more of the file, the top of the file has syntax, but colors stop at some point in the file for reasons I can’t figure out… Here’s two examples.

Example 1

Example 2

Fair points, and thanks for the screenshots.

1 & 2: Agreed, opening a file from the Changes tab should show the same diff. We’ve let the team know, and there’s no update yet. If you need to hand-edit before then, check out the agent’s branch locally.

3: I was able to reproduce the coloring cutting off in PHP files, and we’ve let the team know. You can follow this thread for updates.