font-family: "Brush Script MT" in <style> tag breaks HTML markup

[rivdiv]

Version 19.1
Installed via Nuget
Using Visual Studio 2013

Issue:

Depending on how the HTML that is being displayed in the TextBox is formatted, the HtmlEditorExtender will mess up the <style> tag and display it as follows:
<style< style="">

To Reproduce

See attached sample project. There are 2 .html files, both contain the same content, only difference apparent to me is one file is formatted with indentations in beginning of the lines, while the other is not. While both cases, the content inside the style tag is removed, the latter causes the HtmlEditorExtender to display the style tag as <style< style="">.

Is there a work-around?

(When the bad output is sent as an email to a gmail recipient, gmail will not display the email text.)

Same results in Chrome, Firefox and Edge.
HtmlEditorExtenderBug.zip

[AlekseyMartynov]

I confirm the issue. Minimal HTML to reproduce:

<style><!--
    body { font-family: Script; }
--></style>

Is there a work-around?

This code worked for me:

badHTML = badHTML.Replace("Brush Script MT", "sans-serif");