active_support/mini_xml question/bug?

Seems to me that {}.to_xml is generating one level too many of xml
structure, but I may be interpreting things incorrectly... I've reduced
my question to a very simple case:

b

=> {"elist"=>[{:element=>1}, {:element=>2}]}

puts b.to_xml

<?xml version="1.0" encoding="UTF-8"?>
<hash>
<elist type="array">
   <elist>
     <element type="integer">1</element>
   </elist>
   <elist>
     <element type="integer">2</element>
   </elist>
</elist>
</hash>

Also with skip_types:

puts b.to_xml(:skip_types => true)

<?xml version="1.0" encoding="UTF-8"?>
<hash>
<elist>
   <elist>
     <element>1</element>
   </elist>
   <elist>
     <element>2</element>
   </elist>
</elist>
</hash>

There's one too many levels of <elist>. Is this a bug or intentional?
Is there a way to get it to remove that extra layer?

What I would like/expect the behavior to be is:

<hash>
<elist>
     <element>1</element>
     <element>2</element>
</elist>
</hash>

Thoughts?