An end BODY html tag in a macro output causes Confluence to stop rendering the Page

If a macro outputs html with a end BODY tag (ie </body>) then this causes Confluence to stop rendering the Page (the editable part).

This is very easy to reproduce. I just now created a new macro using the guide here:

http://confluence.atlassian.com/display/DEVNET/Developing+your+Plugin+using+the+Atlassian+Plugin+SDK

ie using the atlas-create-confluence-plugin command. I then simply modified the execute-method like this:

public String execute(Map params, String body, RenderContext renderContext)
throws MacroException
{
String returnString = (String) params.get("return");
if (returnString != null && returnString.equals("no-end-body"))

{ return "no-end-body"; }

if (returnString != null && returnString.equals("end-body"))

{ return "end-body</body>"; }

throw new MacroException("You must specify the parameter 'return', with a value of 'no-end-body' or 'end-body'.");
}

When I created the macro I gave it the name 'bugtest'. And to test this macro in action I just type this at the top of the DEMO Space page:

{bugtest:return=end-body}

And when I view the page everything below my macro output is gone, except the normal footer with Labels, Children etc. Now, I can only assume that this shouldn't happen.

If I change the parameter like this:

{bugtest:return=no-end-body}

then all is fine, ie below my macro output is there, ie the welcoming text and balloon picture etc.

I have also attached my entire macro as a deployable zip file.