# + PHP leads to extra whitespace in CSS

If I have the following code in a <style> block inside a PHP file...

.greenbuttons { color: #<?php cfg('green'); ?>; }

... and I hit Ctrl-Alt-L to reformat the file I end up with...

.greenbuttons { color: # <?php cfg('green'); ?>; }

... which doesn't work. If I have a hard coded color like #00FF00; then the space isn't added.

Is this something I have set wrong somewhere? I don't see settings that affect spaces following the # symbol?

Thanks!

P.S. If it helps, my about dialog says this is PHPStorm 2016.1 Build #PS-145.258.