Yes, when I hit on an emoticons I only watch the "link", not the image on the Message Area.
How can I fix it? Is it possible?
This is not a bug, this is normal. You cannot show graphics inside of a text box. We are working on advanced WYSIWYG-based premium templates for a future version of JoomlaComment.
And another question, I watch that when I print an article, the comments it is printed too, It is possible to disable it
This is a known bug that is very complicated. It will hopefully be addressed in 4.1.