ADDITIONAL SYSTEM INFORMATION :
Tested it on MacOSX (Open Adopt JDK) and windows 10 (https://jdk.java.net/ and Open Adopt JDK)

A DESCRIPTION OF THE PROBLEM :
When switching from Java 8 (Oracle) to Java 11 (AdoptOpenJDK) the indentation of our XML has been changed.
The indentation fails when a xml element is defined with an attribute xml:space=preserve. Everything after the xml element containing the attribute is no longer indented

REGRESSION : Last worked in version 8u281

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
With the below code the problem can be reproduced. The variable data must be a XML string, for instance
<?xml version=\"1.0\" encoding=\"UTF-8\"?><a><b>650b4d21</b><c>If true</c><d xml:space=\"preserve\">TRUE</d><e>test</e></a>
In this case the tags 'a','b','c','d' are indented, everything after tag 'd' will not be indented.

Transformer transformer = TransformerFactory.newInstance("com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl", Test.class.getClassLoader());

transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
transformer.setOutputProperty(OutputKeys.CDATA_SECTION_ELEMENTS, "body hyperlink");
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");

StringWriter writer = new StringWriter();

StreamSource in = new StreamSource(new StringReader(data));
transformer.transform(in, new StreamResult(writer));

System.out.println("-----");
System.out.println(writer.toString());
System.out.println("-----");

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
    <a>
        <b>650b4d21</b>
        <c>If true</c>
        <d xml:space=\"preserve\">TRUE</d>
        <e>test</e>
    </a>
ACTUAL -
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
    <a>
        <b>650b4d21</b>
        <c>If true</c>
        <d xml:space=\"preserve\">TRUE</d><e>test</e></a>

FREQUENCY : always