Fix RichTextField not showing up when editing/republishing page (#2)

Bump tinymce version
Related: #2944

samples/react-list-form/package.json

@@ -19,7 +19,7 @@
     "@microsoft/sp-property-pane": "1.10.0",
     "@microsoft/sp-webpart-base": "1.10.0",
     "@pnp/spfx-controls-react": "^1.19.0",
-    "@tinymce/tinymce-react": "^3.0.1",
+    "@tinymce/tinymce-react": "^4.2.0",
     "@types/es6-promise": "0.0.33",
     "@types/react-dnd": "~2.0.34",
     "@types/webpack-env": "1.13.1",

samples/react-list-form/src/webparts/listForm/components/formFields/SPFieldRichTextEdit.tsx

@@ -1,26 +1,26 @@
 import * as React from 'react';
 import { ISPFormFieldProps } from './SPFormField';
 
-import * as tinymce from 'tinymce';
-import 'tinymce/themes/silver';
-import 'tinymce/plugins/paste';
-import 'tinymce/plugins/link';
-import 'tinymce/plugins/image';
+import "tinymce/tinymce";
+import "tinymce/icons/default";
+import "tinymce/themes/silver";
+import "tinymce/plugins/paste";
+import "tinymce/plugins/link";
+import "tinymce/plugins/image";
 import 'tinymce/plugins/imagetools';
 import 'tinymce/plugins/advlist';
 import 'tinymce/plugins/print';
 import 'tinymce/plugins/autolink';
 import 'tinymce/plugins/lists';
-import 'tinymce/plugins/table';
+import "tinymce/plugins/table";
 import 'tinymce/plugins/preview';
 import 'tinymce/plugins/anchor';
 import 'tinymce/plugins/fullscreen';
 import 'tinymce/plugins/media';
-import 'tinymce/plugins/imagetools';
+import "tinymce/skins/content/default/content.min.css";
 import { Editor } from "@tinymce/tinymce-react";
 
 const SPFieldRichTextEdit: React.SFC<ISPFormFieldProps> = (props) => {
-    tinymce.init({});
     const { Name, RichTextMode } = props.fieldSchema;
     const value = props.value ? props.value : '';
 
@@ -34,7 +34,7 @@ const SPFieldRichTextEdit: React.SFC<ISPFormFieldProps> = (props) => {
         skin_url: "https://cdnjs.cloudflare.com/ajax/libs/tinymce/5.0.1/skins/ui/oxide"
     };
     return <Editor
-        id={`Editor-${Name}`}
+        id={`Editor-${Name}-${Date.now().toString()}`}
         init={editorConfig}
         value={value}
         onEditorChange={props.valueChanged}