Hi !
I am also facing the same issue. I am relatively new to UE and nDisplay. I was able to move around the environment with 4.26, but with 4.27 I am not able to do so. I am using the default ndisplay demo project. I edited the NDC_Basic and checked the “Follow Local Player Camera” option, saved and compiled it. Still when I start ndisplay I am still not able to move.