TUI rendering with random characters like â and € windows 11 when UV formatter is enabled

[nhickster]

Description

See the attached screen shots. But I getting garbled characters on my windows machine when I have the uv formatter enabled. I installed opencode with npm, and for some reason the uv formatter appears to be messing with the characters of the TUI. Mostly a lot of †characters, and it's not always in the TUI chrome, the response from the models also has messed up characters. Disabling UV formatter fixes the issue.

Plugins

none

OpenCode version

1.1.25

Steps to reproduce

1. Install open code on windows (I used npm install -g opencode-ai)
2. install the latest python and uv.
3. Run opencode in windows terminal, powershell, pwsh, or wezterm
4. observe random characters instead of TUI chrome.

Screenshot and/or share link

Operating System

Windows 11

Terminal

Window Terminal, Powershell, Pwsh, and WezTerm all have the same issue for me.

Workaround

Disable UV formatter in opencode.json:

"uv": {
  "disabled": true
}

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Opencode Windows Character Spamming #8715: Opencode Windows Character Spamming - Similar character corruption after exiting on Windows with Wezterm
• TUI icons show as garbage characters on Windows 10 #8410: TUI icons show as garbage characters on Windows 10 - TUI rendering showing garbage characters in PowerShell and cmd
• Terminal starts typing random characters automatically during opencode OAuth setup #8883: Terminal starts typing random characters automatically during opencode OAuth setup - Random character sequences appearing during OAuth on Windows

Feel free to ignore if none of these address your specific case.

[nhickster]

I fixed it by disabling the uv formatter! For anyone else seeing this issue, you need to edit the opencode.json to disable formatters. Adding this fixed it:

"uv": {
  "disabled": true
}

Not sure if you want to keep this bug open, but I'll update it to match the actual issue.

[vincentleeuwen]

What a wild and silly bug. Horrible experience when i tried to use opencode first time. @nhickster solution worked for me. Complete JSON:

{
  "formatter": {
    "uv": {
      "disabled": true
    }
  }
}