When change recording is on, adding a comment creates two insertion changes in the change list. I would think that this should only create a single entry in the change list, and it would be helpful if the type was 'comment', not 'insertion'...
I only get one Insertion, but let's switch the issue to the naming of the change.
Win 7 64-bit Version: 220.127.116.11.alpha1+
Build ID: 8b21b5cbe78945b27525b4ce78ae3d981f90590f
TinderBox: Win-x86@39, Branch:master, Time: 2014-11-06_03:55:51