Please try out the features provided in this example. Check out the next paragraph's HTML. You'll see html tags not rendered in the editor's WYSIWYG output. Next, play with the Codepen JS to see what you can change in the editor.
Note that any MoxieManager file and image management functionality in this example is part of our commercial offering – the demo is to show the integration.
If you think you have found a bug please create an issue on the GitHub repo to report it to the developers.
Don't forget to check out our other product Plupload, your ultimate upload solution featuring HTML5 upload support.
Thanks for supporting TinyMCE! We hope it helps you and your users create great content.All the best from the TinyMCE team.