Do you mean the Spot Removal Tool that has the options to either Clone or Heal?
That tool is working correctly on my windows 7 system with LR C CC V7.4
Did you find an answer to this problem? I am having the same issue and cannot get it resolved.
There is no problem with the program. It is User Error. That is why the Original Poster never replied.
If you feel this tool isn't working properly start a New Discussion and state the exact nature of the problem you are having.
Give the Exact version number of LR and operating system you are using (Please not with most recent or up to date).
I looked at your Activity and you haven't posted a question on the problem you are having, other than responding to this discussion.
If you want help with whatever problem you might be having start a new discussion and do as asked above in my other reply.