MinecartCommandBlock can't be pushed my MinecartFurnace

When you try to set up a Minecart with Furnace which pushes a Minecart with Command Block, the Minecart with Furnace simply isn't able to push the Minecart with CommandBlock, even though we get the rail sound. I don't know if it's a rail thing, I only tested it on Activator Rails and that didn't work.