Steps to reproduce:

1. Import and apply the attached resource pack: MCPE-186199.mcpack
2. Create/open a creative world
3. Create an iron golem

Observed result:
The iron golem is rendered “corrupted”, with a purple and black texture

Expected result:
The iron golem is supposed to render with it’s full correct texture

Notes:
See this comment by AgentMindStorm2.

It is unknown if this issue is only present on specific devices, or is present across all devices like the pinned commenter has suggested, but either could be a possibility.

Devices confirmed affected:

Xbox Series X

iPhone 11 Pro

iPhone 13 Pro