Two things, Robert:
First, please edit your question and change the category from "Genealogy Help" to "WikiTree Tech". Also type: arborists in the tag space. That will get the attention of the right people to deal with this as quickly as possible.
Second, although I can't help either to answer your question or to try to find and solve the problem, there is one more thing you can do - if nothing more, than out of curiosity. Where you said "if you click the link to the father ...." please hover your mouse over the link to the father without clicking and look at the bottom left corner of your browser window - you will see the WikiTree ID of the person the link is going to take you to without having to actually go there. In this case, that is probbly going to show Clere-3.
From what you're saying, I agree with your assessment that some kind of merge was incorrectly done in the past, but it will take an arborist to know the best way to fix it.