Character that becomes semi-transparent

Hi,

Problem encountered yesterday in the final instance of episode 3 of season 4.My character became semi-translucent, and my friend saw it that way, which means it wasn't a graphics bug on my game client.

I took a screenshot or you can see that I am no longer opaque.

OS : Windows 10 (updated)GC : Nvidia GTX 1080 TI (driver updated)