if you are sleeping in a bed and someone else trys to sleep in it YOU will get the "This bed is occupied" message

if you join a game sometimes pieces of water will be missing

Grass can't be tilled under plants/sign while dirt can

Dirt can be tilled under plants and sign without destroying the block on the tilled dirt

Particles from beacon & lightning make player able to see through water / ice / portals

Blocks incorrectly able to be placed on end portal frame / end portal frames are solid

Arrows fired into a repeater / comparator / jukebox / command block / hopper / daylight sensor that is updating will play the arrow hitting a block noise

Player can be inside glass pane, when place while jumping

Regeneration increases the speed at which damage is taken from Cacti, Lava and Fire

"Drowning" in creative

When mob is spawned with mob egg on top of tripwire, dispenser fired arrow doesn't hit them when triggered by tripwire

Wheat in corners grows slower than other crops

Potted cacti and fence gates have pieces of the texture missing when next to a block.