Skeletons do not have a bow when spawning in the Sould Sand Valley Biome in the Nether

In this bug report I want to mention a bug that happened to me in the Soul Sand Valley Biome in the Nether. (Could affect multiple biomes, also in the overworld.) [This bug has been present in many past versions!]

Bug:

The skeleton spawned on me and sometimes it happens that it spawns with no bow in it's hand.

Expected Results:

The skeletons should have a bow in theyr hand.

Observed Results:

The skeleton had no bow in it's hand.

Videos attached: YES

Bug Report Video

SKIP TO IN THE VIDEO: 8:50