Minecraft wiki entry for Development_versions, associated text: MC-70111 – When a thrown ender pearl is in the air, it disappears after relogging and the player does not get teleported.
MC-96207 – Boats breaking lily pads creates too many particles.
MC-101247 – Horses, donkeys, mules, and boats sometimes disappear after dismounting.
MC-136367 – When exiting a boat it will put the player on top of the boat.
MC-138465 – Ender pearls forget their owner after reload (of game or chunks).
MC-145275 – Reloading a resource pack messes up all textures for an instant.
MC-157697 – Unplayable conditions when pillagers loaded: extreme lag spikes.
MC-158373 – Raid horn sounds play globally in all villages.
MC-158414 – When riding an entity, players appear to be at the location they mounted it at as soon as they are out of range.
MC-160367 – Pillagers do not despawn.