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!