Steps to reproduce:
# open another user commit
# add 2 inline comments:
* 1st comment covers one line
* 2nd comment covers several lines including line of 1st comment
# press Delete on 1st comment
At this point the inline draft comment is still in database and if I submit the form below (e.g. accept commit, add comment) it would still be in database as draft, but invisible.
I think, that the `Delete` button should delete draft comment directly in database and if `Undo` link is used, then we can create it again there.