Armourstands do not render leather armour colour

Partner Rank:
2

Verification builds:
Beta 1.12.9  2327703

Summary:
The armourstand no longer renders the colour.

Impact:
This affects CityLiving, Monsters of the deep, Grid runners, content in development and any other content on the marketplace which uses leather armour on armourstands. This also affects the base game.

Repro Steps:

1. Download Grid Runners from the store
2. Create a world with coordinates enabled
3. Press the start button
4. Navigate to 238 93 565
5. Take the armour from the armour stand and equip it
6. Respawn new armour on the armour stand (right hand side wall)
7. Compare how the armour is rendered on the player and on the armour stand

Observed Results:
The colour is not rendered on the armour stand

Expected Results:
The colour is rendered on the armour stand like it is on the player

Screenshots/Videos attached:
Yes

Regression Builds:
1.11.x 2242720 & 2160393

Notes:
Bare in mind within the 1.11 screenshot part of the armour is missing due to another bug which was fixed in 1.12.
MCPE-44669 **