Lupdate produces incorrent indent for <context> node

Lupdate produces .ts files like the following:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS>
<TS version="2.1" language="ru" sourcelanguage="en">
<context>
    <name>ClassName</name>
    <message>
       <location filename="../../src/addlanguagedialog.ui" line="14"/>
       <source>Add language</source>
       <translation>Добавить язык</translation>
    </message>
</context>
</TS>

In the example above <TS> and <context> have the same indent level. But I would expect different indents, like the following:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS>
<TS version="2.1" language="ru" sourcelanguage="en">
    <context>
        <name>ClassName</name>
        <message>
            <location filename="../../src/addlanguagedialog.ui" line="14"/>
            <source>Add language</source>
            <translation>Добавить язык</translation>
         </message>
    </context>
</TS>

This is very important for integration with third-party services. For example, Crowdin generates the correct indentation for <context> (which are different from lupdate). This produces huge diffs.