Crimson and Warped Shelf Can Be Used as Fuel in Furnaces Despite Being Non-Flammable

Crimson Shelf and Warped Shelf can be used as fuel in furnaces, blast furnaces, and smokers, even though they are made from non-flammable materials (like crimson and warped wood). This is inconsistent with other blocks of the same wood type, such as crimson and warped planks, which cannot be burned as fuel.

How to Reproduce:

1. Place a furnace, blast furnace, or smoker.

2. Attempt to use Crimson Shelf or Warped Shelf as fuel.

3. Observe that they burn like regular fuel.

4. For comparison, try using Crimson Planks or Warped Planks—they cannot be used as fuel.

Observed Result:

• Crimson Shelf and Warped Shelf can be used as fuel.

• Crimson Planks and Warped Planks cannot be used as fuel.

Expected Result:
Since crimson and warped wood are non-flammable, neither Crimson Shelf nor Warped Shelf should be usable as fuel, consistent with their plank variants.