Infraction: 2. All opinions should be stated as succinctly as possible.
Message to User:
You don't need to post twice when replying to two people.
Read the tooltip carefully. CoH does not necessarily hit the target you cast on.
This doesn't explain why it's only hitting 5 targets when there are a lot more in range (and are not on full HP). I have a feeling that there is an issue with the mechanic for the healing on the target not working correctly, hence the references to the target.