Magnus,
At Creation of Profile:
First Name and Preferred Name fields = Eliza "Jane "
Aditionally, Nicknames field = Jane
The odd display of the names in the image of the profile's page in your question can be expalined as follows:
1) At the top we have:
Usual name display format = [First Name] + LNAB,
= Eliza "Jane " + LNAB
(Note the blank space after Jane and the (" ")s were into the First Name field since the profile's creation).
2) Above Born (DOB) in (POB):
Usual names display format is:
= [First Name] + ([Preferred Name]) + "[Nicknames]" + LNAB
When [Preferred Name] = [First Name], the format is:
= [First Name] + "[Nicknames]" + LNAB
= Eliza "Jane " "Jane" + LNAB
Exactly as it looks like.
This is an undeniable proof of names in GEDCOM imported records are not properly filtered (Names can only contain letters, spaces, periods, dashes and apostrophes).
I hope someone able to fix this issue read this post.