Diff in report HTML is affected by outer indentation of report XML

[AirQuick]

<x:scenario label="Test">
	<x:call function="exactly-one">
		<x:param>
			<test>
				<elem1>foo<bar /></elem1>
				<elem2>foo<?bar?></elem2>
			</test>
		</x:param>
	</x:call>
	<x:expect label="Fail deliberately">
		<test>
			<elem1><!--foo--><bar /></elem1>
			<elem2><!--foo--><?bar?></elem2>
		</test>
	</x:expect>
</x:scenario>

In the failure report HTML, the results are depicted as:

<bar /> should be green in the same way as <?bar?>.