[MC-80901] Landed Falling Block does not trigger redstone updates for block entities (Command Blocks, ...)

When for example a command block as FallingSand falls next to a block providing a redstone signal, it won't update.

Example command

/summon falling_block ~ ~2 ~ {Block:stone,Time:1,Passengers:[{id:"falling_block",Block:redstone_block,Time:1,Passengers:[{id:"falling_block",Block:command_block,TileEntityData:{Command:"say Test"},Time:1}]}]}

When you place a block next to it, it will say "Test".

Note: It appears that this only affects block entities. Here are some examples:

Affected blocks:

Dispenser
Dropper
Command block

Unaffected blocks:

Rails (Activator and golden)
Redstone lamp
Piston

Linked issues

duplicates

MC-51340 Certain blocks do not update when falling, placed or cloned next to a power source

Comments

migrated 2015-06-01T16:36:46Z

Fallingsand is an entity, it doesn't conduct anything.

migrated 2015-06-01T19:03:18Z

He means when it lands and solidifies into an actual command block, the redstone doesn't power it until you give it a block update.

migrated 2017-05-17T21:07:02Z

Confirmed for 1.12 pre-3.

_{For the example command in the bugpost to work now, it should be updated to:}

summon falling_block ~ ~2 ~ {Block:stone,Time:1,Passengers:[{id:"falling_block",Block:redstone_block,Time:1,Passengers:[{id:"falling_block",Block:command_block,TileEntityData:{Command:"say Test"},Time:1}]}]}

migrated 2017-05-19T14:03:24Z

Confirmed for 1.12 pre-5.

migrated 2017-06-05T08:57:32Z

Confirmed for 1.12 pre-7.

migrated 2017-06-13T17:35:24Z

Confirmed for 1.12 release.

migrated 2017-08-06T12:02:21Z

Confirmed for 1.12.1.

migrated 2017-09-15T19:27:37Z

Confirmed for 1.12.2 pre-2.

migrated 2017-09-19T10:54:42Z

Confirmed for 1.12.2 release.

migrated 2017-10-26T17:22:25Z

Confirmed for 17w43b.

migrated 2017-10-27T12:59:16Z

Merging with MC-51340 as it's the same cause.