xslt-transformer should return correct 'text' result for <xsl:output method="text">

The following xslt-transformer configuration:

<int-xml:xslt-transformer id="itemTransformer"
	    input-channel="inputChannel" output-channel="outputChannel"
	    xsl-resource="file:/test-transformer.xsl" result-transformer="resultToString">
	</int-xml:xslt-transformer>

Does not seem to accept <xsl:output method="text"/>. The result of this transformation is the following line in the output:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

If the output type is changed to xml or html things seem to work fine. The xsl and the xml are attached.

This is the same issue as INT-1838 which should have been resolved in 2.0.4.