I am new in using the "FormatBlock" dropdownmenu.

When having text in the CuteEditor and selecting one line, using i.e. "Heading 2", the selected text will be deleted and in the HTML you will see "<h2>...</h2>" with the following text in it. Also in your examples. 

What's going wrong?
Can I also use "Css Class" to format text with <h3> tags for example?