I have also noticed this consistently in split screen multiplayer on Nintendo Switch. It only seems to be when player 2 is in player 1's field of view (even if hidden by blocks), and it makes player 2 have the shield sticking out of their head on player 1's screen and player 2 sees a glitched black shield texture covering most of their screen. Only current workarounds are to hide hand or have player 1 not look in the direction of player 2.
I have also noticed this consistently in split screen multiplayer on Nintendo Switch. It only seems to be when player 2 is in player 1's field of view (even if hidden by blocks), and it makes player 2 have the shield sticking out of their head on player 1's screen and player 2 sees a glitched black shield texture covering most of their screen. Only current workarounds are to hide hand or have player 1 not look in the direction of player 2.