Ctrl+Space not working in Agent Window Mode for Python

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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Python is set up within cursor, and pressing Ctrl+Space would trigger a suggestion, which works in Editor Window.

The current behaviour is that when opening a file in the Agent Window it shows “loading…” indefinitely and does not show any suggestions even when the LSP is active.

Steps to Reproduce

  1. Install python for Cursor (using editor window)

  2. Add the ctrl+space keybind for editor.action.triggerSuggest inside Editor window mode (no way to do this in the agent window).

  3. Enter agent window and press ctrl+space over any token within a python file and see the “loading…” occuring indefinitely.

Expected Behavior

It’s supposed to show the suggestions like in the editor window.

Operating System

Linux

Version Information

Cursor IDE v3.2

Does this stop you from using Cursor

No - Cursor works, but with this issue

5

Hey, thanks for the report. This is a known limitation of Agent Window in Cursor 3. LSP extensions like Pylance in your case aren’t fully integrated into the Agent Window environment yet, so completion providers can get stuck on loading… The same pattern shows up with TypeScript, C/C++, and other languages.

We’re already tracking this on our side along with other Glass and LSP issues like Go to Definition and keybindings. I can’t share an ETA for a fix yet. Once we have an update, we’ll post it in the megathread Cursor 3: Agents Window so you can follow the progress there.

For now, the workaround is to use the Editor Window for editing with autocomplete.