A black screen flashing across fence gate's entrance riding with a Strider in the Nether

When I was ready to ride the Strider to ride the lava in the nether as you can see and I put 12 fence gates at the entrance of the shelter to keep us safe. Something strange happened, there was a black screen when entering and exiting and that bug seems familiar to me because we know that this happens when we were going to take or store a horse in the overworld corral or the strider in the nether refuge. So I hope they fix it. Thank you so much, I loved your game.