Thank you. There's no error in the log, which means that the game is completely unaware that nothing goes to the HMD. As you see loading screen, I assume that it is being updated, I mean, you can look around, right?
I'll add more log info for OpenVR (SteamVR) and check it with the headsets I have (haven't been launching using SteamVR for a while now, as I wasn't changing anything there, I guess that updating OpenVR wouldn't hurt).