An asset is marked with HideFlags.DontSave but is included in the build:

An asset is marked with HideFlags.DontSave but is included in the build:
Asset: 'Library/unity editor resources'
(You are probably referencing internal Unity data in your build.)

UnityEditor.HostView:OnGUI()

原因：使用Unity默認字體

字體導入：要添加一種字體到您的項目中，你需要將.ttf文件放到你的資源文件夾。

然後Unity將自動導入。你必須確保字體的擴展名是.ttf，否則Unity不能識別。