This may be "by design" but a wildfire started next to a roofed forest. Burned very large area next to plains and a village. The biome is still designated as roofed forest and the light level is much darker in the biome. Would be VERY COOL to have the biome change to plains, especially as it abuts plains.

Would be very cool to have any biome change if modified enough. I know this could slow things down to have it auto sense that, but for the fires it makes even more sense.