Making lines in to a bullet/numbered list adds a space between them

To reproduce:

1. Open Confluence editor.
2. On the first line write 'ItemA'
3. Shift+Return to go to a new line.
4. On the new line write 'ItemB'
5. Drag select both.
6. But them in a list.

> There's a space between them! if you take them out of the list, it keeps the space it added. I would expect these items to be added in to a single contiguous list, and I'm sure that's what happened on previous versions of Confluence (upgraded from 4.3 recently).