NewLines on PHPUnit tests

In my team we were having some problems on the display of some tests.
Some of them were outputting newlines and we were not able to redirect the output and show a clean phpunit test output.

The tests execution was like this:

It was very disturbing, that everytime we execute our tests that newline was there to annoy us.

So after a little research I found out that there was an interface in our application that was closed with a ?> (php close tag) and after that some new lines.

That was causing our tests to be output in a wrong way, so I just delete that tag and everything was fine again. :)