jEdit XML Indent bug with deleting spaces in attribute values

test.xml

<?xml version="1.0" encoding="utf-8"?>
<style>
  <!-- this section -->
  <group prefix=" " delimiter=" "></group>
  <names variable="editor" delimiter=", " prefix=" " suffix=""></names>
  <names variable="editor translator" delimiter=", " prefix=" (" suffix=")"></names>
  <!-- becomes -->
  <group prefix=" " delimiter=""></group>
  <names variable="editor" delimiter=", " prefix="" suffix=""></names>
  <names variable="editor translator" delimiter=", " prefix="(" suffix=")"></names>

  <!-- spaces in the attribute values below are unaffected -->
  <group suffix="." delimiter=", "></group>
  <text macro="editor" prefix=" "/>
  <group delimiter=" "></group>
</style>