Html.DescriptionFor rendering inside the previous <textarea/> - html

Question

I have a <textarea /> that has the value of a property in my view model. The property is as follows:
[Display(Name="Description", Description="DescriptionOfDescription", ResourceType=typeof(Resources.Admin))]
public string Description { get; set; }
Notice the Display data attribute. This defines the display name and description of the property. With this, I should be able to set up my markup like so:
<div class="form-horizontal">
<div class="form-group">
#Html.LabelFor(x => x.Description, new { #class="control-label col-md-2" })
<div class="col-md-10">
<textarea data-bind="value: Description" />
#Html.ValidationMessageFor(x => x.Description)
#Html.DescriptionFor(x => x.Description)
</div>
</div>
</div>
The <textarea data-bind="value: Description"/> is using KnockoutJS to bind the value.
In my opinion this should and would work, but for some reason it doesn't. The HTML of #Html.DescriptionFor(x => x.Description) is being rendered within the value of the textarea, which I find very peculiar. I have no idea what's going on, and why it's behaving like this.
Here's an image of the web page:
EDIT
Html.DescriptionFor()
public static class MvcHtmlHelpers
{
public static MvcHtmlString DescriptionFor<TModel, TValue>(this HtmlHelper<TModel> self, Expression<Func<TModel, TValue>> expression)
{
var metadata = ModelMetadata.FromLambdaExpression(expression, self.ViewData);
var description = metadata.Description;
return MvcHtmlString.Create(string.Format(#"<p class='help-block'>{0}</p>", self.Encode(description)));
}
public static string DescriptionForRaw<TModel, TValue>(this HtmlHelper<TModel> self, Expression<Func<TModel, TValue>> expression)
{
var metadata = ModelMetadata.FromLambdaExpression(expression, self.ViewData);
var description = metadata.Description;
return description;
}
}

Answer 1

The problem is that <textarea> is not a self-closing tag, hence the HTML that comes afterwards is considered part of the element.
You need to close it using:
<textarea data-bind="value: Description"></textarea>