Editor resize broken in Chrome in specific condition

[Freddie Bingham]

This appears to be a bug with Chrome, haven't tested Safari. This affects our default installation but it can be triggered with one of the examples.

1. Open Chrome, I used 15.0.874.121
2. Go to ​http://nightly.ckeditor.com/7336/_samples/fullpage.html
3. Resize browser so that it is not 100% width of your screen.
4. Use the Inspector to locate the editor <iframe> (right-click page, Inspect Element, search for <iframe>
5. Click on the <iframe> reference that is found, it contains the title of "Rich text editor ...".
6. Now shrink (resize) the browser horizontally.
7. Notice that the editable area of the editor gets locked in width. You see the collapse and resize handles stuck in place.

Now this is a problem for us as it happens when we resize the editor then resize the browser. We have the editor locked to only resize vertically and have applied the suggested fix at ​http://dev.ckeditor.com/ticket/6308.

Now if you fix 6308 then you can reproduce this bug when setting config.resize_dir = 'vertical'; just by resizing the editor then shrinking the Chrome browser width.

[Jakub Ś]

DUP of #7360