You're right, this worked up until about 15 Mar. I posted another G2G post about it.
In other words, regardless of who you clicked on in a census record, you had three options on WikiTree X:
1) Update an existing WikiTree profile w/ census information
2) Use the WikiTree ID for an existing profile to create a new, connected profile -- father, mother, sibling, spouse, child
3) Create an unconnected profile
I've been looking at this some tonight, and it looks like FamilySearch has changed something in how record detail is used.
I noticed on some marriage records that if you're viewing the information in "preview" mode -- i.e., click and open the record up while remaining in the list -- you get a full transcription of the record including all of the people who are included on the record.
However, if you click through to the detail of the record, you are getting information only about the individual you clicked on.
Here's an example:
If you click on the first record in that list, it will open up as a preview.
If you click on the "paper" icon, you'll go into a detail page that shows only John W. Fulk's information. It doesn't even show the name of his spouse.
I've submitted some feedback to FamilySearch. I can't imagine why they would want to remove detail from the detail page! (Yes ... I'm a little irritated about this. lol)
Incidentally, the detail page for census listings do show clickable links for each of the individuals listed in the census; however, WikiTree X will only grab the information for the primary person in the listing. I suspect these two scenarios are related.