Crimson and Warped stairs, planks and slabs can be used as fuel in a furnace

The new wood-like blocks are meant to not burn, and the Warped and Crimson stems, stripped stems, fence posts and fence gates all cannot be used as fuel in a furnace like their wood counterparts can. However, the Crimson and Warped stairs, slabs and planks can be used as fuel in furnaces. These should not be able to be used as fuel as they are meant to not burn.