How do I enter a plus sign ASP.NET Ajax HTMLEditor

I am using Microsofts ASP.NET Ajax HTML editor开发者_StackOverflow found here http://www.asp.net/ajax/ajaxcontroltoolkit/Samples/HTMLEditor/HTMLEditor.aspx.

When I enter a plus sign '+' into the editor it always gets stripped out and replaced with a space. I even tried using + but that failed to work. Is some way to enter a plus sign into the editor?

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Try replacing it with + (which is the HTML alternative for the plus sign) in the source code view.

And report it to the developers of the ASP.Net Ajax HTML editor, because this sounds like a very annoying bug.