fix

Author: DCFApixels

Editor/NotesSettings.cs

@@ -123,6 +123,8 @@ void ISerializationCallbackReceiver.OnBeforeSerialize()
     }
     public static class NotesSettingsExtensions
     {
+        public static bool IsNullOrDummy(this AuthorInfo self) => self == null || self == DUMMY_AUTHOR;
+        public static bool IsNullOrDummy(this NoteTypeInfo self) => self == null || self == DUMMY_NOTE_TYPE;
         public static bool IsDummy(this AuthorInfo self) => self == DUMMY_AUTHOR;
         public static bool IsDummy(this NoteTypeInfo self) => self == DUMMY_NOTE_TYPE;
     }

Runtime/Note.cs

@@ -68,7 +68,7 @@ public AuthorInfo Author
             get
             {
 #if UNITY_EDITOR
-                if (_author == null) UpdateRefs();
+                if (_author.IsNullOrDummy() == false) UpdateRefs();
                 return _author;
 #else
                 return null;
@@ -87,7 +87,7 @@ public NoteTypeInfo Type
             get
             {
 #if UNITY_EDITOR
-                if (_type == null) UpdateRefs();
+                if (_type.IsNullOrDummy() == false) UpdateRefs();
                 return _type;
 #else
                 return null;
@@ -118,7 +118,7 @@ public Color Color
             get
             {
 #if UNITY_EDITOR
-                return _type.color;
+                return Type.color;
 #else
                 return default;
 #endif