The bug

If you use a spyglass to look at a parrot, ghast, or the ender dragon through an invisible mob the "Is it a bird?", "Is it a balloon?", and "Is it a plane?" advancements are not granted even though you can see the target mob.

To reproduce

1. Summon a parrot and an invisible magma cube by using the commands provided below.

   /summon minecraft:parrot ~10 ~ ~ {NoAI:1b}

   /summon minecraft:magma_cube ~5 ~ ~ {NoAI:1b,Size:3,Glowing:1b,active_effects:[{duration:-1,amplifier:0b,id:"minecraft:invisibility"}]}

2. Obtain a spyglass and look at the parrot through the invisible magma cube.