Solved Sunglass-icon displayed after punctuation mark in Descriptions and Categories

Hello, 
After installing Kunena 6.2.0 as Forum-extension in Joomla 5.0.0, I had noticed that there were many black-yellow Sunglass-icons in the text of readymade categories and posts in the Main Forum (out-of-the-box).
I thought it was a pun of a Kunena-developer who created the 'Welcome Visitor' message and the 'Suggestion Box' categories and posts.
But after creating some categories myself with explanatory texts (in Description, and Category Header), I noticed that this sunglass-emoticon (9.png from Kunena) shows up all over the place!
It seems as if the sunglass-icon is stamped (not-by-me) in between the text I had made, after a colon ':',
after a comma ',' a question mark '?' and a dot '.' etc.
My guess is that every punctuation mark in Descriptions or Category Headers is always followed by the sunglass-icon in the frontend (but not in the backend).

How/where can I correct/remove/adjust this exaggerated charade of sunny smileys?

Regards, sthop
WAMP: Windows 11pro, Apache 2.4.54 (Win64), MariaDB 10.10.2, PHP 8.2.0 .

mm strange I don't recognize this
but have you already looked at kunena > Tools > Diagnostics
did they all pass the test?
And maybe reinstall Kunena 6.2.0 Language Package

Hello Leen,
I ran Kunena Diagnostics and all 'TEST PASSED - No issues found!'
I have not installed the Kunena Language package.
Is that necessary?
regards, sthop

would give that a try anyway.

I installed the Kunena Language Pack, and restarted WampServer.
Result: the sunglass-icon  is still overall present in the Kunena Forum Categories and Posts.

Could it have something to do with the fact that I use MariaDB as DBMS? Character map? Collation?

I have looked at all the test sites but I don't see this phenomenon anywhere.
And your smileys from kunena are just the standard installation, nothing has been changed?
this is what the text in my category looks like

Go to Kunena -> Emoticons in the backend and edit this smilie. This error occurs when the field for the code is empty. Enter this code and save. This should solve the problem.

Hello Leen,
Backend: I had to manually add many Kunena-emoticons in order to get them in the Kunena-list (see image).
Frontend: This way, I would get some of them appear in the (previously empty) Smiley-popup of the Text-editing box of a New Topic (see other image).

Hello rich,
Sorry, I did not see your answer.
Your solution works!
I filled all the empty Code fields with the same code
Thanks, sthop

In principle, each smiley should have its own code, as the smileys are also displayed if you enter the code directly in a post without opening the smiley dialogue box.