Wide characters are only half underlined

VS Code issue: https://github.com/microsoft/vscode/issues/158981

👽 現代

![image](https://user-images.githubusercontent.com/98423974/186265324-702b11da-a770-47f8-80cd-eb44868adcea.png)

Unconfirmed which renderers this affects.