Hi

If i use example http://richtexteditor.com/demo/custom_buttons3.aspx 

and paste into html view

<audio controls>
  <source src="horse.ogg" type="audio/ogg">
  <source src="horse.mp3" type="audio/mpeg">
  Your browser does not support the audio tag.
</audio>  

Then click one of the server buttons we lose the content within the audio tag. Can you recreate and fix?

We have some server controls which postback to the server and some content is lost because it didnt go via the save button.

Hope you can help 

Additional after first posting:

I have also noticed that on http://www.richtexteditor.com/demo/javascript_api.aspx if you paste in the audio stuff then click getHTML button the javascript version also truncates the response.

Further additional.....

Just tested in different browsers all the above was in IE11.

Firefox works fine.

Chrome javascript version is OK. The postback example works once then fails on second postback. i.e. click the button1 2 times in a row