Yes. Florida Building Code - Plumbing Section 405.3.1
states, in part, that "A water closet, urinal, lavatory or
bidet shall not be set closer than 15 inches from its
center to any side wall, partition, vanity or other
obstruction...". As this section is written, a large
dispenser could be considered an obstruction depending on
several factors, such as the actual size of the dispenser
and the actual installation location.