Thanks for the ticket number. You should have a reply in your mailbox from my colleague Miroslav which states the following:
The strange shadow you were seeing on the bottom right corner is actually the reflection of the “Problematic_Object” mesh traced on the ground plane (“Boden_Highend”). You have the “Visible to camera” option turned off in the object properties so the mesh isn’t rendered, but is still considered for reflections/refractions. Just turn off “Visible to reflections” in the V-Ray object properties dialog or “Visible to Reflection/Refraction” in the native 3ds Max Object properties dialog.