Error with Templates: Could not find templates on cloning but on creating

Hi,
Today i've tried to set up a template directory. I added in the system wide gitconfig the following lines:
	
	[init]
		templatedir = "//OurServer/SomeDirectory/GitTemplate"

Where //Ourserver is a Network Path.
With this line i can create a new Repository and the template gets copied. But when i clone a repo the following error shows up and the template doesn't get copied:
	templates not found /OurServer/SomeDirectory/GitTemplate

I Recognized that one slash was missing. Hence i added one:
	[init]
		templatedir = "///OurServer/SomeDirectory/GitTemplate"

Fine, cloning works after that, but creating a new repository then shows up a Warning:
	templates not found ///OurServer/SomeDirectory/GitTemplate

Is that a known bug or is it my Failure?

I use git 2.13 on windows 7


Kind regards
Mathias Artus