Regression: Drag-and-drop from Cursor Explorer to Chat/Composer stopped working (Windows)

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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Environment

OS: Windows 10 (build 22631)
Cursor: 3.1.10 (distro d5c0e77a0214208f36b56d42e8e787de88d02ea4)
This worked in the previous Cursor version before updating.
Expected behavior

Dragging a file or folder from the Cursor Explorer sidebar into the Chat or Composer input area should attach it as context, as it did before.
Actual behavior

Explorer → Chat/Composer drag-and-drop does not work; nothing is added to the input or context.
Windows File Explorer → Chat drag-and-drop with the same file still works.
Steps to reproduce

Open a workspace and select any file in the Explorer sidebar.
Drag that file toward the Chat or Composer input/panel.
The file is not added as context.
Notes

Before the update, both Explorer drag-and-drop and Windows File Explorer drag-and-drop worked.
After the update, only Explorer drag-and-drop appears broken, which may indicate a difference between internal app DnD and OS-level DnD.

Steps to Reproduce

  1. Open any folder as a workspace in Cursor.
  2. In the left Explorer sidebar, click a file under the workspace (so it is selected).
  3. Drag that file onto the Chat or Composer input area (or the chat panel).
  4. Observe: the file is not added as context; drop appears to do nothing.

For comparison:
5. Open the same file’s path in Windows File Explorer.
6. Drag the file from Windows File Explorer into the same Chat input.
7. Observe: the file is added as context successfully.

Expected Behavior

Dragging a file from the Cursor Explorer tree into Chat or Composer should attach it as context (same as before the update). Explorer-side DnD should behave consistently with drag-and-drop from Windows File Explorer when targeting the same chat input.

Operating System

Windows 10/11

Version Information

IDE: Cursor 3.1.10 (distro d5c0e77a0214208f36b56d42e8e787de88d02ea4)

Does this stop you from using Cursor

Yes - Cursor is unusable

6

Hi @Sol_Kong

Thanks for the detailed report and the clear steps to reproduce. This is a known issue with drag-and-drop from the Explorer sidebar into Chat/Composer, and our team is actively investigating.

The fact that Windows File Explorer drag-and-drop still works is a really useful diagnostic detail — it points to a specific internal drag-and-drop code path.

In the meantime, here are a couple of workarounds:

  • Use @ in the chat input to search for and add files as context

  • Right-click a file in the Explorer sidebar and select Add to Chat (if available)

You may also find this related thread helpful: Drag and Drop Broken

We’ll keep working on a fix. Let me know if anything else comes up!

10

Hey @Sol_Kong,

We’ve made some changes to drag-and-drop in this area since you posted. Could you give it another try on the latest version? Quick check:

  1. Open a workspace and select a file in the Explorer sidebar.
  2. Drag it onto the Chat input area.
  3. The file should be attached as context.

Let me know if dragging files from the Explorer into Chat still doesn’t work!