As for the other thread, we're looking into it.

We deploy updates to WordPress.com many times daily, so it's tough to say what might've happened without more details to investigate.

If you come across this again in the future, please post here again (or in a new forum thread) to let us know the exact steps you're taking so we can try to reproduce it on our end.

Something must have changed, just check out the revisions (see below).

This is the text now: http://farm9.staticflickr.com/8291/7863569690_35b78a7b97_o.png
This is the visual now:
http://farm9.staticflickr.com/8445/7863603600_802e674c93_o.png
This is the published page now: http://farm9.staticflickr.com/8308/7863570324_49361ee0e1_o.png

This is the revision list: 20120824 clearly broke it again: http://farm8.staticflickr.com/7264/7863570066_84b70337c2_o.png

This is the broken copy: http://farm8.staticflickr.com/7132/7863615394_69388b13ee_o.png
This was the OK copy from the text editor on 20120824: http://farm9.staticflickr.com/8434/7863673170_6c408d44f8_o.png
This is part of the diff (it also mangled with the html on the same page):
http://farm8.staticflickr.com/7247/7863673354_3379a852c5_o.png

The odd thing is: today I did the same actions as 20120824, and now it works. Very strange: something must have changed somewhere.

--jeroen

Thanks for replying with the Pastebin examples. I tried the first one in a test post in the Text editor, then previewed the post successfully (in a new browser tab).

Next, on the Edit Post screen, I switched to the Visual editor (screenshot), then previewed the post again, and the result was still the same (screenshot).

Can you make sure that in the shortcode language option that you're enclosing the "xml" syntax in double quotes? I've annotated it in the first screenshot.

http://wiert.me/2012/07/31/generating-wordpress-posting-categories-part-1/

it has two XML parts that got truncated, that you can download here: http://pastebin.com/b6Z0v14E
and here: http://pastebin.com/mkY1icLB

And this post:

http://wiert.me/2012/05/23/the-ado-net-entity-framework-and-sql-server-2000-the-providermanifesttoken-attribute-and-selecting-it-with-xpath/

for which the XML is here: http://pastebin.com/HdSuzfH0

Note that it has to do with the visual editor, but it is virtually impossible to avoid the visual editor as the text editor does not support keyboard shortcuts for editing links, formatting, etc.

I have no idea when it started, it has been there all the time and needs to be fixed.

Can you save a post draft with the XML source code using the Text editor, making sure not to switch to the Visual Editor, then reply to this forum thread so I can try to reproduce this on my end?

If it was recent, do you know about when it started?

See also here: http://en.forums.wordpress.com/topic/please-stop-deleting-the-xml-from-my-sourcecode-languagexml-1?replies=9

and here: http://en.forums.wordpress.com/topic/xml-sourcecode-will-be-deleted-all-the-time?replies=16

That is consistent (just search my blog for XML http://wiert.me/category/development/xmlxsd/xml/

You will see that almost all XML is gone. I even went so far as to replace less than and greater than with braces (but that looks so odd that I stopped with that too).

--jeroen

Example post is in http://wiert.files.wordpress.com/2012/02/wordpress-html.doc

Please follow the link in my opening post to get a feel for what I already know.

--jeroen

Please get back to me on this, as it is very irritating that WordPress kills all but the most basic XML from sourcecode language=xml fragments.

--jeroen
Blog url: http://wiert.me