This is happening with certain ores with the extra output of ores upgraded:

Forge Version: 1.12.2-forge1.12.2-14.23.4.2705
Minecraft: 1.12.2
Mods Involved:
Level Up: Level+Up!+2-1.1.22-1.12
Minstrapp: Minestrappolation+5.3.1

It should also be noted that it likely does not function with ANY ores, Minstrappolation, Biomes O' Plenty, Dungeon Tactics, Quark, and vanilla ores.