Still happening in 1.15.2. I have an iron golem farm 160 blocks above the ground and it works perfectly, but the moment I go to my main base the zombie despawns and the farm remains broken. I either have to spawn in another zombie or torture myself by trying to bring one with me to the cauldron. Named, covered and out of reach for the iron golems, still despawns.
Still happening in 1.15.2.
I have an iron golem farm 160 blocks above the ground and it works perfectly, but the moment I go to my main base the zombie despawns and the farm remains broken. I either have to spawn in another zombie or torture myself by trying to bring one with me to the cauldron. Named, covered and out of reach for the iron golems, still despawns.