Using fireworks while flying directly down in Elytra will slow your speed

Crash when attempting to create a creative superflat world with Overworld preset

Nether Portals do not respect Overworld positions, and will instead all link up directly in the nether

Relogging while having an active potion effect will not trigger its effect

Magma blocks do not damage if sneaking over/through them

Broken Beehive/Bee nest blocks have a random NBT tag assigned