kupu: definition list

dear developers

(silva-1.1.1 all)

can anybody explain me how the definition list style should correctly 
be applied to *existing* paragraphs in kupu? i only get strange 
results. e.g. i start with:

   aaa
   bbbbbb

when i select all this i expect 'aaa' to be the term and 'bbbbbb' to be 
the description. paragraphs and apply the definition list style i get 
the following result:

   aaabbbbbb

everything on one line and bold.

the source in kupu:

   <p class="normal">aaa<br>bbbbbb<br></p>

and after applying the definition list:

   <p class="normal"><dl><dt>aaabbbbbb</dt></dl><br></p>

the only way the definition list worked for me was that one has to 
click *first* on the definition list button and *then* write the text. 
but shouldn't it be possible to apply this style to existing text?

furthermore: i found out that after deleting a definition list the tags 
remain in the source but are empty:

   <dl><dt><br></dt><dd> <br> </dd></dl>

this results in strange behavior when you use backspace and the text of 
the paragraph following the definition list "jumps" into this code.


one more thing: undo does not work with definition lists.

regards,
marc