Labels

Droppers, Dispensers and Pistons activate when blocks are providing power diagonally or two blocks above

Fence gate closes when destroying adjacent block

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

Cactus can grow next to blocks

Lamps, Signs Fence Gates, and sheep eating grass don't give block updates!

Paintngs and Frames don't update supspended sand

Placing redstone dosen't make rails turn until replaced?

Rows of Vertical Down Piston Extenders have a >50% failure rate

items pop out of ground if block updates in low light

Piston stays extended while power is cut

Dispencer quasiconnectivity latch missbehaviour

Some redstone components (block entities) do not update themselves when placed

Light-based farm harvesting no longer works properly.

Some plants not working properly with flowerpots

Double-tall plants do not cause updates when broken

Floating doors in Strongholds

Water spawned by melting ice does not update

WTF - Floating Water

Breaking blocks while being teleported will not update the game

Sugar Cane not disappearing

Cacti grow next to blocks.

Using /setblock to set block entities with items in their inventory does not update comparators adjacent to the block entity

Setblock or Fill does not instantly update Beacon Beam colors

Sponges created with /setblock don't absorb water

Powered rail not updating by torch when powered

Right after starting a world, blocks don't update

Buggy conditionality when command blocks are updated within a tick