Something I noticed a while ago but forgot to mention...
If you copy-paste a list...
1. element 1
2. element 2
3. element 3
...it will be inserted into the editor as this
1. element 1
2. element 2
3. element 3
which causes the list elements to be in the form <li><p></p></li>, which as I posted earlier, is rendered differently than <li></li> (at least in chrome).