fix

Assets/UIWidgets/painting/text_span.cs

 using UIWidgets.foundation;
 using UIWidgets.gestures;
 using UIWidgets.ui;
-using UnityEditor;
 using UnityEngine.Assertions;
 
 namespace UIWidgets.painting

Assets/UIWidgets/ui/txt/utils.cs

 using System;
-using UnityEditor;
 
 namespace UIWidgets.ui
 {
         {
-            return Math.Round(v * EditorGUIUtility.pixelsPerPoint) / EditorGUIUtility.pixelsPerPoint;
+            return Math.Round(v * Window.instance.devicePixelRatio) / Window.instance.devicePixelRatio;
         }
     }
 }