Issue: Position keyframes render incorrectly with any Iris shaders and make the entire game (not including the HUD) black, until looking away from the keyframe. Disabling shaders fixes this issue.
To reproduce: Install Iris, ReplayMod, and a shaderpack. Enable your shaderpack and enter a replay, attempting to place a position keyframe.
Intended result: The keyframe renders.
Actual result: The game does not render anything until the keyframe is out of sight.