"Platform WindowsStandaloneSupport does not support graphics device type" warning in 2017.4

I upgraded my project from 2017.1.2p2 to 2017.4.4f1 and now Unity started to output the following warning every time I open the editor:

Opening the project in 2017.1.2p2 does not output this warning. There is no callstack or additional information where this messages comes from.

The editor seems to work though, rendering etc is fine as far as I can tell.

Any idea what's causing this issue and how I can get rid of it?

 

facing same issu in unity 2018

 

I noticed the same warning today on 2018.1.3f1, which is also not showing the name of device type.

Graphics APIs for Windows:
Direct3D11
OpenGLCore
Vulkan (Experimental)

I removed OpenGLCore and warning is gone.

Running Win 10 with GTX1060 using 397.64 drivers.

 

Added OpenGLCore back (at bottom of list) and warning is still gone.
Moved into second place and still fine.

 

I get the same message when I open the package "your first shader in Unity"
"Platform WindowsStandaloneSupport does not support graphics device type"

I noticed that when I just touch the material "MazeBrick", it loses all its information
even if I reopen the project.

 

UPDATE- It's some bug of the Inspector. Just change the shader to "Autodesk Interactive" everything is ok