I just made my realm and this instantly happened to me as soon as I made a pair of diamond boots with every enchantment possible on them, mending, unbreaking 3, feather falling 4, depth strider 3, thorns 3, and blast protection 4. Sadly, my game crashed when I tried to record the incident happening.
Hi, I wanted to add that I’m having this same problem. I built Silentwisperer’s most recent raid farm and decided that I would try to use his Allay sorter to flex on my D2 clan mates, and all my Allays instantly transmitted from their trapped locations into the Nether. The portal was like 20 blocks away; I’ve just moved it but I’m going to be safe and just fly home instead.
Unlike some others here, their pathfinding and ability to find and follow me have not broken, they work completely fine. It’s just annoying having to trap them all again and again every time I come by here. I have not used a lead on an Allay before.
I am playing the most recent update, 1.19.41, on Xbox Series X on a 10 player Realm.