Seems that tiny editor not compatible any more

While editing in the backend tiny editor shows white font everything is unreadable even the Yoast readability tab is in grey I deactivated all plugins used the twenty template nothing to do so it is neither the template error nor plugin in dev mode in order to read what you writing in editor need to override the color to continue editing .js .tmce-active .wp-editor-area { color: #f6f7f7; }