Remote Desktop Homedrive not being mapped

Hello,

I'm running a Windows 2016 Remote Desktop PoC. When the Remote Desktop profile location is specified in the Active Directory the Home drive is not being mapped in the session. Any idea how this is possible? It works for Windows 2008 R2 and 2012 R2. 

I've checked and there is no DNS issue of any kind and I can map the drive manually.

When I use a GPO to map the Remote Desktop home drive everything works as expected, however this is not possible since we have users with TS home drives in different locations.

I'm running the latest January update, DCs and AD Schema is 2012 R2.

Thanks