I discovered that this mod makes some Fluids placeable in-world that shouldn't be able to.

The Molten Metal Fluids from Thermal Foundation (Molten Platinum, Molten Invar, Molten Constantan, etc.) cannot be placed in world, and therefore don't have a Block model. With MoarTinkers they can be placed, but the mod doesn't provide a model too, so the fluid looks like this

This Behavior can't be deactivated in the config, as it only allows to remove the whole material.