wrapping p or ending br for new content (Shift)EnterMode br

The FCKeditor in IE wraps new content in p tags (I have set both EnterMode and ShiftEnterMode to 'br'), also firefox sometimes ends the new content with a br tag.

Desired behavior
The behavor I'm looking for is a combination of Firefox and IE. When removing all content, I want the newly entered text not marked up, no wrapping p tags nor ending br tags.

Firefox 2.0.0.9 behavior, FCKeditor 2.5 Beta Build 16848
- Overtyping the text (select all and type) works fine.
- But when removing the text first (select all, backspace or delete, then type) a <br /> tag is being inserted at the end.
- Removing all content by using backspace (not selecting all, but hitting backspace untill all content is removed, then type) works too.
- Removing all content by using del (again not selecting, but using del until all content is removed, then type) wraps the content in p tags and inserts two spaces (&nbsp; ) before the content.

IE (6 & 7) behavior, FCKeditor 2.5 Beta Build 16848
This is almost the opposite of Firefox.
- Overtyping the text (select all and type) wraps the content in p tags.
- Removing the content first (select all, backspace or delete, then type) works fine.
- Removing all content by using both backspace or del (not selecting all, but hitting backspace or del untill all content is removed, then type) works fine.

Any ideas, should I make this a ticket?