"Format as XML" cannot handle element text on new line

Using the format command on an XML snippet with element text on its own line (or on line with the closing tag) does not yield the expected indentation.
Before:
```
<Tag>
<Tag2>
Text
</Tag2>
</Tag>
```

After:
```
<Tag>
    <Tag2>
Text
</Tag2>
</Tag>
```