Can't input into Copilot when text in Xcode is selected

**Describe the bug**

When you select some code in Xcode, you can't input into Copilot even you have selected Copilot as the focused app.

**Versions**
- Copilot for Xcode: 0.43.139
- Xcode: 26.0
- macOS: 26.0

**Steps to reproduce**
1. Select some code in Xcode
2. Choose Copilot
3. Input some thing

You can't input anything into Copilot.

**Screenshots**

**Logs**

**Additional context**