Small fix

lib/widgets/default_styles.dart

@@ -151,7 +151,10 @@ class DefaultStyles {
               fontSize: 20.0,
               height: 1.5,
               color: Colors.grey.withOpacity(0.6),
-            ), Tuple2(0.0, 0.0), Tuple2(0.0, 0.0), null),
+            ),
+            Tuple2(0.0, 0.0),
+            Tuple2(0.0, 0.0),
+            null),
         lists: DefaultTextBlockStyle(
             baseStyle, baseSpacing, Tuple2(0.0, 6.0), null),
         quote: DefaultTextBlockStyle(

lib/widgets/raw_editor.dart

@@ -508,9 +508,11 @@ class RawEditorState extends EditorState
     super.build(context);
 
     Document _doc = widget.controller.document;
-    if (_doc.isEmpty() && !widget.focusNode.hasFocus) {
+    if (_doc.isEmpty() &&
+        !widget.focusNode.hasFocus &&
+        widget.placeholder != null) {
       _doc = Document.fromJson(jsonDecode(
-          '[{"insert":"${widget.placeholder}"},{"attributes":{"placeholder":true},"insert":"\\n"}]'));
+          '[{"attributes":{"placeholder":true},"insert":"${widget.placeholder}\\n"}]'));
     }
 
     Widget child = CompositedTransformTarget(