Spectator is a game mode within Minecraft meant to provide players with the opportunity to spectate their worlds without interacting with anything. One of the headlining features of the game mode is the ability to see through the back faces of blocks while inside of them, enabling players to see within enclosed spaces without needing to be positioned inside such spaces. This feature unfortunately isn't functional with Ray Tracing by default. BetterRTX fixes the issue through a simple check for primary rays, replacing them with new rays placed behind the back faces of blocks should the original ray hit the back face of one.