I was transporting a villager to the Nether, once it entered the Nether, it accidentally wandered to the portal leading it to the Overworld. I tried to get the villager to enter the portal again but it doesn't go in the Nether once it touched the portal blocks. I tried so many ways to get the villager in but it just doesn't anymore after that. Then, my iron farm started to work slow because of this because I use Nether portals for my iron farm that transport the iron golems to the Overworld and killing them there. In 1.16.2, some of the iron golems can't enter the portal because of this bug. All of the golems used to go to the portal in my iron farm before 1.16.2 I hope this gets fixed. Much love <3