Bug ID: JDK-8058152 JDK accepts XSLT stylesheet having import element erroneously placed

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JDK 9
9 b141Fixed

Let's consider following XSLT stylesheet:

    <?xml version="1.0" encoding="UTF-8"?>
    <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

      <xsl:template match="content">
       <html><xsl:apply-templates/></html>
      </xsl:template>
     
      <xsl:template match="content/title">
       <h1><xsl:apply-templates/></h1>
      </xsl:template>
     
      <xsl:import href="Test5footer.xsl"/>

    </xsl:stylesheet>

RI (JDK8b132) for the present moment processes such XSLT stylesheet successfully, however according to W3C spec [1] error should be thrown because import elements are allowed to be placed in the beginning only:

    The xsl:import element children must precede all other element children of
    an xsl:stylesheet element, including any xsl:include element children.

The minimized testcase is attached.
In order to reproduce this bug:
1. Unzip attached archive;
2. Compile Test5.java source;
3. Run Test5 class passing it full directory path where Test5* XML and XSL files are located.

[1] http://www.w3.org/TR/xslt#import