[BUG] Mobile app does not show skill arguments in the user message

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report
• [x] I am using the latest version of Claude Code

What's Wrong?

A skill is started with an argument from the desktop CLI, for example /wayfinder 1096. The Claude mobile app follows the same session, but its message bubble shows only /wayfinder. The argument 1096 is missing. So on mobile I cannot see which input a skill run got.

What Should Happen?

The mobile app shows the full command with its arguments, the same as the CLI.

Error Messages/Logs

None.

Steps to Reproduce

1. Start a Claude Code CLI session that the mobile app can follow.
2. Run /clear.
3. Run a project skill with an argument, for example /<skill> <arg>.
4. Open the session in the mobile app.
5. The message bubble shows /<skill> without <arg>.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.283 (Claude Code)

Platform

Anthropic API

Operating System

Windows (CLI). The bug shows in the Claude mobile app.

Terminal/Shell

PowerShell

Additional Information

The mobile app has a German UI. The "Kontext gelöscht" divider comes first, then the bubble with only /wayfinder. I will add a screenshot in a comment.