bug: paste multi-line text into Claude Code removes characters

[JannikWempe]

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Neovim version (nvim -v)

NVIM v0.11.5

Operating system/version

MacOS 26.1

Describe the bug

Copying multi-line text into Claude Code removes some Text.

This is how is looks if I paste (CMD+V) a JSON schema into the input:

This was the full schema:

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "title": "User",
  "required": ["id", "email"],
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid"
    },
    "email": {
      "type": "string",
      "format": "email"
    },
    "name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "age": {
      "type": "integer",
      "minimum": 0
    },
    "roles": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": ["admin", "editor", "viewer"]
      },
      "uniqueItems": true,
      "default": ["viewer"]
    },
    "settings": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "theme": { "type": "string", "enum": ["light", "dark"] },
        "notifications": { "type": "boolean", "default": true }
      }
    }
  },
  "additionalProperties": false
}

I can't really paste any multi-line text into Claude Code because it removes arbitrary characters

In the Claude Code CLI itself, it ends up like this:

Steps To Reproduce

1. Copy multi-line text
2. open Claude Code inside via Sidekick
3. paste
4. see malformed text

Expected Behavior

I'd expect the same behavior as using Claude Code directly via CLI.

Repro

[hirotaka]

I'm experiencing the same issue on macOS with Neovim v0.11.5.

As a workaround, I found that using Ctrl-\ Ctrl-n p (switching to normal mode and then pasting) works correctly. However, it would be much more convenient if CMD+V worked properly.

Looking forward to hearing from others about this issue.

[JannikWempe]

Thank you for the workaround! This already helps.

(Feeling stupid not having tried that 🙄) For me it is Ctrl-q to switch to normal mode though.

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[github-actions]

This issue was closed because it has been stalled for 7 days with no activity.