single-click selection on contenteditable="false" not working in Chrome

[drimmeer]

Steps to reproduce

1. run CkEditor in Chrome
2. click the 'Source' button on the ckeditor tool bar, to switch to html source mode
3. input: <span contenteditable="false">SampleField</span>
4. click the 'Source' button again to switch back to normal mode
5. click on the 'SampleField'

Expected result

The 'SampleField' should be selected, and you can move the mouse to drag the whole text to somewhere else

Actual result

The 'SampleField' is not selected, and you can not move the mouse to drag the whole text to somewhere else

Other details (browser, OS, CKEditor version, installed plugins)

This works fine in IE and Firefox. OS: Windows 10 CKEditor version: 4.5.8

[Jakub Ś]

We don't support native nested contenteditable elements.

If you wish to have non-editable elements inside the editor, please use widgets -
​http://docs.ckeditor.com/#!/guide/dev_widgets
​http://docs.ckeditor.com/#!/guide/widget_sdk_intro
​http://ckeditor.com/demo#widgets
We have invented them for a reason :)