I have identified an issue within your editor within Kendo UI for jQuery.
When you open the editor on an iPhone, Safari will display some dropdowns in the editor's toolbar twice. You will see the Kendo dropdown, and to the right Safari displays the original <select>. It seems to be impossible to hide the <select> by CSS.
You can reproduce this issue at your own demo website, when you use Safari on an iPhone device:
See sample presentation in the attached file.
Is this a known bug?
Do you have a workaround or a fix for this behaviour?