Why does `yum history list` shows EE in Altered Section if rpm package has echo statement in %posttrans scriptlet?

Solution Unverified - Updated 2014-07-18T13:38:19+00:00 -

Issue

If the rpm package has any kind of echo statements in %posttrans scriptlet, and if installed using yum, yum history list shows EE in altered section.
Is it a bug or expected behaviour?

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)