To resolve CK Editor issue do following thing in qa-theme.php file of the theme (see below path)
In qa-theme/Clean/qa-theme.php
Find code between line #43 to line #45 and remove it
$this->output('<SCRIPT TYPE="text/javascript"><!--',
'if (typeof qa_wysiwyg_editor_config == "object")', 'qa_wysiwyg_editor_config.skin="kama";',
'//--></SCRIPT>');
Now CK Editor should available.