I am having this issue. In the editor everything works fine. In the packaged build, it looks like the pawn never initializes. My pawn class never creates the controllers, but that is the very first thing it is scripted to do. Also, my HMD origin is well below the intended start position, and my orientation is flipped 180.
I have my BP_Pawn set as the default player pawn class, but I’m fairly certain it is not being created (or possibly just skipping BeginPlay?)
Any suggestions on what else I need to check?