Looking at another thread about the delete key not working, it would appear there is an issue at current between vorpX and Battlefield’s rendering engine that is being looked into and possibly going to be fixed, but as to when the fix is available, unknown.
Until the China Rising expansion update, I had played on the Test Range in BF4 trying out my Rift and the controller I’m developing specifically for FPS games. Now that the update came out, I have NO Rift capability in BF, just in other games like FEAR1/2/3, Halflife series and a few other games I’ve been trying lately.