wilcosworld

Although not an answer- a workaround.

Find your ‘tiny_mce.js” file, it is in ‘wp-includes/js/tinymce/tiny_mce.js’

Line 7572, you need to change:

// if ((tinyMCE.isGecko || tinyMCE.isOpera || tinyMCE.isSafari) && tinyMCE.settings.force_p_newlines && e.keyCode == 13 && !e.shiftKey) {

to:

if ((tinyMCE.isGecko || tinyMCE.isOpera) && tinyMCE.settings.force_p_newlines && e.keyCode == 13 && !e.shiftKey) {

(Edited from: http://ijneb.com/archives/2007/10/13/safari-3-wordpress-2-tinymce-and-paragraphs/)