Solved Emoticon issue after update

I updated Kunena from 5.2.3 -> 5.2.6 and the Blue Eagle template from 1.6.2 -> 1.6.6. Now I witness a strange issue with my emoticons. I open the emoticon palette window, click on a particular emoticon and the correct emoticon is inserted into my text. But after saving the post a completely different smilie shows up. After investigating and testing a little bit the issue is this: After klicking on a particular emoticon in the palette window the right emoticon shows up in the WYSIWYG editor, but switching into the BBCode view I can see that the wrong code was entered.

This issue occurs with some emoticons, but not with all. Two examples:

In the palette I click on the "Cry" emoticon and after that I click on the "Wink" smilie. The two emoticons show up correctly
 

But if I switch to the BBcode view I can see that the wrong codes have been inserted
 

I checked the backend to see that the right codes are listed
 

What is going wrong here?

BTW: If I enter the right codes manually, the right emoticons are being displayed after saving the post. But in the WYSIWYG editor only the code is displayed, not the corresponding emoticon

This thread can be closed. Issue was obviously a result of a change that I made to the "ckeditor_config.js". I switched back to the original ckeditor_config.js and the emoticon issue was gone. Now I will try to find out which change exactly caused the issue. Sorry for bothering you and thanks again for this great component!