Bug: Adding comments at lowest hierarchy level

[ChristianScholtKSOL]

I think I found a bug in XML-Notepad when trying to add a comment at the lowest hierarch level in a nested XML-Structure.
I get the following Error-Message from a Validator: ERROR_XML_CONFIG:: Error Message: no character data is allowed by content model.
See the following examples:

Allowed:

<catalog>
    <book id = "Book_1" author ="Writer_A" title = "title_A" ></book>
</catalog>

Also Allowed:

<catalog>
    <book id = "Book_1" author ="Writer_A" title = "title_A" ><!-- Just a comment like it is allowed to do --></book>
</catalog>

Not Allowed (and already fixed I think):

<catalog>
    <book id = "Book_1" author ="Writer_A" title = "title_A" >  </book>
</catalog>

Also Not Allowed:

<catalog>
    <book id = "Book_1" author ="Writer_A" title = "title_A" >  <!-- Just a comment like it is allowed to do -->    </book>
</catalog>

What XML Notepad does:

<catalog>
  <book id="Book_1" author="Writer_A" title="title_A">
    <!--test-->
  </book>
</catalog>

from XSD (if it is from interest)

...
<xs:element name = book>
    <xs:complexType>
        <xs:attribute type = "xs:string" name = "id">
        <xs:attribute type = "xs:string" name = "author">
        <xs:attribute type = "xs:string" name = "title">
    </xs:complexType>
</xs:element>
...

[clovett]

fixed in https://github.com/microsoft/XmlNotepad/releases/tag/2.9.0.17