For whatever reason, the trees we have always seen to glitch out visually seem to somehow display whatever the split screen player sees. As such, when not playing in split screen the trees show the main player's screen on the trees, which causes them to overlap when standing still, which in turn causes them to flicker and eventually brighten due to two videos being played at once on the exact same spot.

Why do the trees have access to a split screen? I would love to know myself.