If you hold an item or block that has emissive textures in your off hand then entities held in the main hand (Chest, Ender Chest, Trapped Chest, Shulker Box and Bed) do not display a texture and show the black-purple no texture.
Steps to Reproduce
Hold an item or block in your off hand (that has emissive textures)
Hold a Chest, Ender Chest, Trapped Chest, Shulker Box or Bed in your main hand, it will show the black-purple missing texture.
OptiFine Version
OptiFine 1.16.5 HD U G8 pre10
Installation Method
Standalone installer.
Prior Testing
If you've installed standalone:
Does this happen in Vanilla without OptiFine?
No it only happens if emissive textures are present for a block or item.
For example in the John Smith Legacy packs, I have put emissive textures on glowstone blocks and other items.
Description of Issue
If you hold an item or block that has emissive textures in your off hand then entities held in the main hand (Chest, Ender Chest, Trapped Chest, Shulker Box and Bed) do not display a texture and show the black-purple no texture.
Steps to Reproduce
OptiFine Version
OptiFine 1.16.5 HD U G8 pre10
Installation Method
Standalone installer.
Prior Testing
If you've installed standalone:
For example in the John Smith Legacy packs, I have put emissive textures on glowstone blocks and other items.
glowstone.png (normal texture) glowstone_e.png (emissive texture) etc...
https://www.johnsmithlegacy.co.uk/