Minecraft Version: 1.12.2
Forge Version: 14.23.5.2838
Mod Version: 1.0.29

Description:
Items that should be rendered in 3D are invisible in the inventory/JEI. I'm guessing, based on comments here (#576) that this is a cross-mod compatibility issue with Botania.

Issue still exists with OpenSecurity 1.0-39, so OpenSecurity may have not been the only one causing this issue.

Bug was in OpenSecurity, so this can be closed. (Fixed with OpenSecurity version 1.0-39)

Anyways, we should both rely on Item#setTileEntityItemStackRenderer instead of overriding TileEntityItemStackRenderer.instance

fixed as of above merged.

Example items: Bamboo shield, Wasp Dagger, Web Slinger, Staff of Geae

(A simple work-around might be to offer 2D sprites for these items and have a config option to turn off 3D rendering, if it's too hard to fix.)

I'm not really sure what is going on here - I mean the mod is in a big pack like PO3 with a tons of mods and it doesn't have the same issue. The bug with Botania was fixed aaaaaaaaaaages ago so it shouldn't be that.
I would suggest you remove whatever mod is causing it - Irc wasn't it Endless Traverse that was actually found to be the culprit in the other issue relating to this? #619

I don’t have the botania mod installed but the 3d models dont render/are invisible in the inventory and when you hold/equip them. Are there any other mods that are incompatible with The Erebus? If so, please inform me. I will list all the mods that are installed if you want. The items are the ones with 3D models (eg. augmented scorpion claw, shields etc.)