[Bug] Shift+Enter Line Break Not Working in Cursor IDE on Mac

Found 3 possible duplicate issues:

1. https://github.com/anthropics/claude-code/issues/193
2. https://github.com/anthropics/claude-code/issues/2451
3. https://github.com/anthropics/claude-code/issues/1718

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🤖 Generated with Claude Code

same me since after last release
and does not work command key

I've just encountered this today after Cursor updated to a newer version. I don't know whether this is a Cursor problem or a Claude Code problem.
I've tried multiple things including renaming the Cursor directory in Application support in my Mac. Nothing works.

Latest from Cursor has broken the "Claude Code" extension - basically shift+enter and other shortcuts no longer work...I am just using Claude Code in a terminal outside of Cursor as a workaround.

I am currently using Cursor IDE, and only in the Claude Code extension, Shift + Enter does not work.

As in the solution by toy-crane in the link below:
https://github.com/anthropics/claude-code/issues/1718#issuecomment-3290591731

When I set the text to "\^[\n", Shift + Enter works fine on my Mac.

im using CC via cursor extension also but on ubuntu-24 (raised a similar issue a few days ago)

Also happened for me since the last update. Frustrating.

I am currently using Cursor IDE, and only in the Claude Code extension, Shift + Enter does not work. As in the solution by toy-crane in the link below: #1718 (comment) When I set the text to "\^[\n", Shift + Enter works fine on my Mac.

It’s still not working on my end. In Cursor, both Shift + Enter and ⌘ + Delete fail, even though they work fine in VS Code.

It’s ironic — they’re breaking core features even under AI PR reviews, and it seems like there’s no A/B or grey-testing before updates.

I found a temporal solution is to not open claude using the extension's button, but to just open it in terminal via "claude" command and then move the tab to right pane. IDE is still connected and all hotkeys are working

Same issue here.

Someone mentioned that option + enter still works even better than shift + enter because it doesn't add the \ character.

So I went ahead and created the following rebind in karabiner elements to work around the issue and it's been working great:

                    {
                        "description": "Map Right Shift + Enter to Right Option + Enter in Cursor",
                        "manipulators": [
                            {
                                "conditions": [
                                    {
                                        "bundle_identifiers": ["^com\\.todesktop\\..*$"],
                                        "type": "frontmost_application_if"
                                    }
                                ],
                                "from": {
                                    "key_code": "return_or_enter",
                                    "modifiers": { "mandatory": ["right_shift"] }
                                },
                                "to": [
                                    {
                                        "key_code": "return_or_enter",
                                        "modifiers": ["right_option"]
                                    }
                                ],
                                "type": "basic"
                            }
                        ]
                    },

I also went to Cursor hotkeys and removed all hotkeys that are bound to option + shift by default.

You can do something similar with AHK on windows too.

Hope someone finds it useful.

Running Claude in Cursor’s terminal with Shift + Return works inconsistently but it mostly doesn’t work. I’ve been using Option instead, but I miss the Shift+Return behavior. I already checked ~/Library/Application Support/Cursor/User/settings.json and ~/Library/Application Support/Cursor/User/keybindings.json and didn’t notice anything unusual there.

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Bump. But fyi to everyone here the issue is from Cursor not from Claude Code because if you use VS Code you won't have this issue.

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