Using multiple Formatter on Xml Documents

Hello,

I am trying to write a custom Formatter for Xml-Files.

My goal is to align the properties in each line.

<Tag1 Property1=".."
  Property2=".."/>

<Tag1 Property1=".."
      Property2=".."/>

 So in this example I want to Format the first tag into the second.

I have already created a custom TextFormatter.

As I purchased the Web-Languages Plugin, I want to use the prewritten XmlTextFormatter.

public class MyFormatter: ITextFormatter
{
  private XmlTextFormatter xmlFormatter;
  //...
  public void Format(TextSnapshotRange snapshotRange)
  {
    xmlFormatter.Format(snapshotRange);
    //my textchanges
  }

There is no problem, if I leave out the xmlFormatter.Format. It behaves as I wish.

However if I try to change the snapshot after applying the formatter the document gets ripped apart near the changes I apply.

I assume, that the offsets/line positions of the snapshot are somehow faulty, after using the xmlFormatter.

Is there a way to restore a state, where I can continue formatting the file?

Edit: I gave you the wrong version. I am using: v13.2.0590 on 09.09.2013

Thank you very much and kind regards,

Younes Müller