i have a SMP (Survival MultiPlayer) on minecraft 1.16.3, i play with some of my friends and have a good progress on it

then, i wonder how the world will look like with shaders

1. i put some shaders in the game, then, i go with my butterfly leviathan and swim a bit, when i wanted to use target commanding, but then i accidentally closed the dragon staff's interface, and i opened it back
2. I tried with a royal red, but it was the same thing
3. i have forge 34.1.42, optifine for 1.16.3 and this ONLY HAPPENS with shaders, i think someone reported something like this but this is happening to me with the shaders BSL

the game shows a black screen on the background and some items i saw beds, chest and the skin of my creature, the only way to fix this was turning on or turning off the fullscreen, but before changing the item on the hand, i was able to interact with things but i was freezed and i dont know what i was doing