Placing netherrack on the floor at a corner and setting the top of it on fire works as usual. If you then run past the corner, the fire will catch the player on fire regardless of how long is spent near it. It seems the player clips into the fire at some point. Additionally, when walking up to the netherrack, the player will catch fire - this was never the case and makes decorating with fire particularly dangerous now.

Also, there is no way to bind an F key to take a screenshot anymore, so no reference photos.