[Bug] Player-Held Shulker Boxes loses texture when wearing Emissive Elytra.

[AlphaBraveHeart]

Description of Issue

When players are wearing Elytra with emissive textures and they hold out a Shulker Box, the Shulker Box loses its texture. Placed Shulker Boxes and Shulker Boxes in Item Frames are not affected. Placing Elytra on an armor stand does not affect the Shulker Box either. Issue is fixed when taking off the Elytra.

Steps to Reproduce

1. Install a resource pack with an emissive elytra.png (elytra_e.png)
2. Equip a pair of elytra and hold out any color shulker box.

OptiFine Version

1.16.4_U_HD_G6

Installation Method

JAR file into a "mods" folder, using Forge.

Fabric/Forge Version

Forge Version 35.1.10

Other Installed Mods

None other than Optifine.

F3 Debug Screenshot

Prior Testing

If you've installed standalone:

• Does this happen in Vanilla without OptiFine?
  No.

If you've installed using Forge/Fabric:

• Does this happen without other mods installed?

  • Only OptiFine and Forge
    Yes.

• Does this happen without any mods at all?

  • Only Forge/Fabric by itself.
    No.

• Does this happen in OptiFine standalone?
  Yes.

• Does this happen in Vanilla without OptiFine?
  No.