Steps to reproduce are tricky...
Here what i've just done on demo.idempiere.com :
Create a new client and set its language to a different country than gardenworld (i've set it to France).
Then using the admin user, log on and choose Spanish language and goto the business partner window / Location tab. Open the location dialog.
All adress fields will be displayed in spanish (which is ok) but Road and Map button will be in English.
to connect you can use email@example.com / clientAdmin1