• Minecraft Version : 1.12.2
• Forge : 14.23.5.2847
• Reborn Core : 3.16.2.473
• Tech Reborn : 2.24.1.1032

These are the latest version of Minecraft 1.12.2 at CurseForge.

It is no longer possible to place items directly from the inventory into the chemical reactor.

JEI's Move Item function couldn't be used.

It is able to forcibly input items by using automatic input/output on the Chemical Reactor's Configure slots, but it have confirmed that processing does not start despite the correct recipes and having enough energy.

Sorry for my poor English... I use Google Translate :)