Hi

I used Vuforia image tracking with PC webcam and placed a virtual cube on top of the image target. I also have a flow simulation which works fine on its own. When playing in Unity, once the image target is tracked, a virtual cube is placed correctly, however, there will be a transparanet box show up on the opposite direction of the virtual box. Screenshot is attached.

Is it something to do with the image tracking?

Thank you very much.