Safari: image dialog cannot load image attributes

[Wiktor Walc]

If image is aligned to the left or right, and "Image properties" is selected in the context menu, then the opened dialog is empty (does not load any image attributes, including image url).

Steps to reproduce

• start with the following source:

  <p>
  	sample <img alt="" src="http://a.cksource.com/f/1/img/logo-ckeditor.gif" style="float: left; width: 133px; height: 41px; " /> text</p>
  

• right-click on an image and click the "Image properties" item
• result: values in Image dialog are empty

Another related issue:

• start with

  <p>
  	sample <img alt="" src="http://a.cksource.com/f/1/img/logo-ckeditor.gif" style="float: left; width: 133px; height: 41px; " /></p>
  <p>
  	&nbsp;text</p>
  

• move cursor at the end of word "sample" and right-click with your mouse
• result: image properties item is available in the context menu (not loading image attributes correctly as well)

[Frederico Caldeira Knabben]

DUP of #3846