This seems correct, I can see the issue. The fact is that it's an error in the translation, just a small one, but it gives this effect.
As a side note, anyone can translate for Project-GC, or view how the translations look. Do so by visiting http://translate.project-gc.com/
It can be tricky to find the correct string though. In this case, the translated string looks like this:
<b>%s</b> km, <b>%d</b> caches, on <b>%s</b>
and has been translated into:
<b>%d</b> km - <b>%d</b> caches, op <b>%s</b>
The one with sharp eyes can see that a %s has been changed into %d. %s and %d are placeholders for strings and numbers. %d is the one for numbers. However, numbers in that case can not be with decimals, or have thousand seperators. Therefore, it will be cut at the first non digit.
I will correct this translation, it will take some days before it reaches the live servers.