Experiencing repeatedly (very, very repeatedly) in 1.20.6. Not just visual, also catches on mobs and other carts. While in motion, passes through most (but not all?) solid blocks unobstructed, will also float adjacent to the track it's allegedly on. Also causes incorrect interactions with powered rails and detector rails; carts will sometimes not be detected. The glitch is currently making it extremely difficult to use Minecarts in the game.
Updated with details and how to reproduce.