Failed commit clears comments
If I attempt to commit something (in this case it was an object with a dependency I didn't include in the list of objects to commit) and that commit fails, you not only refresh the list view again (I can live with that) but you clear the comments. Given the already dismally small field (way too small given how many objects I might be checking in), I have to edit these in a text editor first (you don't support tabs either in there) and paste it in...well, if I don't realize there's going to be a failure (happens often enough), I might clear out that text file and move on while the commit's occurring. Regardless, there's no reason to clear that comment field unless the commit actually succeeded.
Great idea!