Minecraft wiki entry for Development_versions, associated text: MC-78688 – Invulnerable mobs still act like they are taking damage in fire.
MC-89141 – Shulker spawn instant position is crooked (not aligned to block grid).
MC-94576 – Player head in inventory causes buggy rendering of certain inventory slots, potion effect display, and attack cooldown.
MC-94896 – Tab completion works incorrectly when text is already selected.
MC-95554 – Tab-complete does not work correctly for /playsound.
MC-98224 – JSON signs with scoreboard objectives erase their block data upon chunk load.