[Bug?] No shadows with openGL4 + tesselation

Hi,

I noticed that I don’t have shadows in UE4 when I enable tesselation on a material. I only tested it with OpenGL4 on Linux (I believe openGL3 has no tesselation). Is there a workaround?

System:

Arch-Linux
Nvidia driver 370.23 (via Primusrun)
I7 4710HQ

Thanks in advance!
-siebencorgie