I've been looking at the source and trying to work out what the blank space is, i.e. margin pixels, paragraphs etc. and the blank lines are selectable:
This is a sample blank line, as it appears in the source:
<div id="lmm_geo_tags_4c74453a_8" class="lmm-geo-tags geo">Beaufort Bar and Restaurant: <span class="latitude">52.069380</span>, <span class="longitude">-9.633333</span></div>
I have turned off displaying the venues below the map and added my own list using a PHP call in the functions.php file but the same issue appears. I've left a message on the Studio Press site support (makers of the Genesis & Magazine theme) so I'll let you know any replies.