GPX Tracks Module

It seems, that only the first numbers before the dot in the default longitude and latitude fields are recognized, for example

latitude: 50.111111
longitude: 6.962585

Only changes to the first numbers changes anything in the frontend view... change 50.111111 to 50.999999 - nothing happens

changes 50.111111 to 51.000000 - frontend view moves

Modul Version 2.0.0 - Joomla 2.5.6

Anybody else with that problem?!?