Ideally light blocks would be treated as any other replaceable block and drop their item when a block is placed inside them by any method. Currently they only drop when a player has placed a block directly into it. That means any 2-block block like beds, 2-high flowers, and doors will not drop a light block if the second block intersects with a light block.
This also means that any world action will also not drop a light block. Gravel, anvils, and sand for example.
I haven't found an event that fires for "block replacements" or an event that I can bend for that purpose, so this bug will make it into the next release.
Ideally light blocks would be treated as any other replaceable block and drop their item when a block is placed inside them by any method. Currently they only drop when a player has placed a block directly into it. That means any 2-block block like beds, 2-high flowers, and doors will not drop a light block if the second block intersects with a light block.
This also means that any world action will also not drop a light block. Gravel, anvils, and sand for example.
I haven't found an event that fires for "block replacements" or an event that I can bend for that purpose, so this bug will make it into the next release.