Styles applied to inner table are also applied to outer cell.

[Jakub Ś]

I have found it when checking #9154.

To reproduce:

1. paste the below code and switch to WYSIWYG.

   <table border="1" cellpadding="1" cellspacing="1" style="width: 500px;"><tbody><tr><td>a</td><td>aa</td></tr><tr><td><p>a</p><table border="1" cellpadding="1" cellspacing="1" style="width: 500px; "><tbody><tr><td>a</td><td>a</td></tr><tr><td>a</td><td>a</td></tr><tr><td>a</td><td>a</td></tr></tbody></table><p>a</p></td><td>aa</td></tr><tr><td>a</td><td>aa</td></tr></tbody></table><p>&nbsp;</p>
   

2. Select all text/cells in inner table
3. Choose cell properties and apply background colour to these cells

Result: Styles are applied to outer cell as well. See video for more details.

Problem has been reproducible in all browsers from CKEditor 3.6.1 rev. [6918].