This issue is seen in Safari, Firefox (Mac and Windows), Internet Explorer 10 and Chrome (Mac and Windows)
This helps with the problem
$CKEditor_config["enterMode"] = 2;
BUT there is still an issue as the strange characters still get added at the end, good thing is this solves the issue for the most part.
I have noticed that this seems to dissapear if you type text there (just typing a space does not work) but just hiting enter does result in strange characters