When the content of the Kendo UI Editor contains the head, the code within it is displaying with the use of the viewHtml.
The content within the head will be displayed.
Manually remove the tags from the IFrame (Dojo).
var iframe = $('.k-iframe') // Identify the iframe by its class
var iframeContent = iframe.contents() // Access the content of the iframe
var metaElement = iframeContent.find('meta') // Traverse down the DOM tree to reach the <meta> element
metaElement.remove()// Remove all the <meta> elements