New link does not overwrite old links

[Piotr Jasiun]

1. Open "Replace by class" sample.
2. Select "Neil Armstrong and Buzz Aldrin"
3. Click link button and create link to "wikipedia.org".
4. Close dialog (press "ok").
5. Click in the midile of "Armstrong".
6. Click link button.

Result: This is still link to "en.wikipedia.org/wiki/Neil_Armstrong". You can see in in source as well:

<a href="http://en.wikipedia.org/wiki/Neil_Armstrong" title="Neil Armstrong">Neil Armstrong</a><a href="http://wikipedia.org"> and </a><a href="http://en.wikipedia.org/wiki/Buzz_Aldrin" title="Buzz Aldrin">Buzz Aldrin</a>

Expectation: New link will overwrite old one.

[Marek Lewandowski]

Confirmed at Opera 19.0.1326.63 @ Win8

[Piotrek Koszuliński]

I would also expect that link overridden the old ones.

[Jakub Ś]

Problem can be reproduced from CKEditor 3.0.

Same thing will happen when you select text and link. When you select two links next to each other nothing will get changed.

[Olek Nowodziński]

cc

[Jakub Ś]

This issue is in fact duplicate of #8470.