Deleting heading and hitting delete to pull paragraph into space causes inline styles

[Joe]

Steps to reproduce:

1. Use the demo editor: ​http://ckeditor.com/demo
2. Click the image and hit delete
3. Select the heading ("Apollo 11" in the demo)
4. Hit delete
5. Hit delete again to pull the following paragraph into the space where the heading was

Source difference between step 3 and 5:

<h1>Apollo 11</h1>

<p><b>Apollo 11</b> was the spaceflight that landed the first humans, Americans <a href="http://en.wikipedia.org/wiki/Neil_Armstrong" title="Neil Armstrong">Neil Armstrong</a> and <a href="http://en.wikipedia.org/wiki/Buzz_Aldrin" title="Buzz Aldrin">Buzz Aldrin</a>, on the Moon on July 20, 1969, at 20:18 UTC. Armstrong became the first to step onto the lunar surface 6 hours later on July 21 at 02:56 UTC.</p>

<h1><b style="font-size: 13px; line-height: 1.6em;">Apollo 11</b><span style="font-size: 13px; line-height: 1.6em;"> was the spaceflight that landed the first humans, Americans </span><a href="http://en.wikipedia.org/wiki/Neil_Armstrong" style="font-size: 13px; line-height: 1.6em;" title="Neil Armstrong">Neil Armstrong</a><span style="font-size: 13px; line-height: 1.6em;"> and </span><a href="http://en.wikipedia.org/wiki/Buzz_Aldrin" style="font-size: 13px; line-height: 1.6em;" title="Buzz Aldrin">Buzz Aldrin</a><span style="font-size: 13px; line-height: 1.6em;">, on the Moon on July 20, 1969, at 20:18 UTC. Armstrong became the first to step onto the lunar surface 6 hours later on July 21 at 02:56 UTC.</span></h1>

Browser/OS Using Chrome 25.0.1364.97 m on windows 7

Also Same effect if you use backspace to pull the paragraph up as opposed to delete to pull it up.

[Joe]

Not sure if deemed a duplicate of ​http://dev.ckeditor.com/ticket/9998 Definately a similar bug.

[Jakub Ś]

@dsmjoe - this is the same issue as #9998