[geo_mashup_show_on_map_link] does not select related location

Geo Mashup version: 1.5.2
Wordpress Theme: WooThemes Canvas 5.1.3
WooThemes Framework version: 5.5.3

Website: http://destinationkohkood.com

It looks like there is a problem with the [geo_mashup_show_on_map_link] function.

For example: http://destinationkohkood.com/soneva-kiri/ ends up at the “Khao Rearub” post position. (all the show_on_map links end up there)

As you can see, the link selects a unique wrong position for all listed posts/positions.

Thanks in advance!

http://wordpress.org/extend/plugins/geo-mashup/