修改

src/components/Tinymce/toolbar.js

@@ -1,6 +1,6 @@
 // Here is a list of the toolbar
 // Detail list see https://www.tinymce.com/docs/advanced/editor-control-identifiers/#toolbarcontrols
 
-const toolbar = ['bold italic underline strikethrough alignleft aligncenter alignright outdent indent  blockquote undo redo removeformat subscript superscript code codesample', 'hr bullist numlist link image charmap	 preview anchor pagebreak fullscreen insertdatetime media table emoticons forecolor backcolor']
+const toolbar = ['fontsizeselect bold italic underline strikethrough alignleft aligncenter alignright outdent indent  blockquote undo redo removeformat subscript superscript code codesample', 'hr bullist numlist link image charmap preview anchor pagebreak fullscreen insertdatetime media table emoticons forecolor backcolor']
 
 export default toolbar