Placing Acacia or Oak Roof Wood blocks in the crafting area will produce 4 Oak Wood Planks blocks, just like regular Oak Wood blocks.

I know they're probably still implementing the rest of the block types (slabs, stairs, etc.) associated with these new wood types, this is mostly to make sure they don't forget. Also, I suppose this behavior is acceptable for the Oak Roof wood, as it is another type of Oak.

Likely related to MC-36364 (Roofed Oak and Acacia Trees drop incorrect saplings) and MC-36410 (Oak Roof Wood and Acacia wood won't turn into charcoal).