Updated description by GoldenHelmet

Steps to reproduce

1. Place a cactus block.
2. Walk away >> 15 blocks.
3. Summon a cat, tame it, and make it stand it up.
4. Teleport the cat onto the top of the cactus.

Expected result

The cat teleports back to you because it is a pet, is > 12 blocks away, and is not sitting.

Actual result

The cat stays on top of the cactus until it dies.

Original description
If a animal in Minecraft teleports onto a cactus while teleporting to you it will remain on the cactus, and if the cactus is not broken it will sit there and die. I have only experienced this glitch with cats and only on bedrock edition for Xbox One.