Minecraft wiki entry for Development_versions, associated text: MC-144080 – Clicking anywhere in "Video Settings..." plays the click sound.
MC-144083 – Cannot drag slider in options.
MC-144092 – Fox offspring don't trust the player.
MC-144142 – Foxes take and eat things while sleeping.
MC-144161 – Warning on game startup: "File minecraft:sounds/mob/fox/bark5.ogg does not exist, cannot add it to event minecraft:entity.fox.bark".