Hide inline fields (not paragraphs!) in LibreOffice Writer mail merge

Hi everyone,

i am trying to create a mail merge letter, specifically adress lines from a spreadsheet. That works just fine, I have on problem though: I can’t find a way to hide empty fields - inline, NOT paragraphs.
Example:
<Academic-Title> <First-Name> <Last-Name>

So, what happens as a result is
a) For an entry WITH an academic title
“Dr. Michael Sampleman”
b) For an entry WITHOUT an academic title
" Janet Samplewoman"

Note the space before example b.

How can I hide an empty field, including the space between fields?

Thank you all so much for your help,
Julius