Trying to go back to my base. (have coordinates wrote down) While attempting to explore i ran into this like 5 times. I will be going back home from the same direction I came from. (went north away from home I came home south wards) but i would run into a invisible barrier that WAS NOT THERE BEFORE when I came from that way. Had one time where I was stuck on the barrier in water and the barrier made it so it was like the water had no physics. The water was there on the screen but acted like air on the block next to the barrier. And in said water there was a Drowned and a salmon, BOTH WERE FROZEN IN PLACE BUT, the Drowned still came and killed me, even tho on my screen he was still frozen in place. I was riding my horse when this happened and my horse couldn't get past the barrier (no mobs can get trough and all mobs on other side appear to be frozen) but i can place blocks on other side of barrier.... kind of, it just glitches out and places them but its very picky. I can just save and quit, and re open my world I was on which does get rid of the barrier, but this is annoying since it happens about every 300 to 800 blocks. And when you add the time between the exiting and saving and the loading of your world the time wasted starts to stack.