Well, I had the same problem and solved upgrading Artio Joom Sef to 3.7.0. But there is some others possibilities to get quick moderation to work.
In Artio component you have the possibility to configure how it manage the SEF of all extension on your site. Go to Components --> Artio JoomSEF --> Manage Extensions, look for JComments and click on it.
Inside this configuration you have a option called "Handling". Just go testing one by one and add another comment to receive another link after change this option.
The last option is Don't SEF, in this case you will turn off SEF for Jcommens, it may resolve this issue but if one of the above options work is better.
Sorry for any English mistakes, but I'm Brazilian.
