Affects Version/s: Minecraft 16w41a
Fix Version/s: None
This snapshot attempted to fix
MC-107730, which was not a bug but normal behaviour for a BUD block, whose intended purpose is to detect updates even when these are supplied from further away.
Instead of removing the ability of Observers to strongly power blocks directly in front of them, this was done by changing the range to which the Observer outputs updates from 2 blocks taxicab to 1 block.
This means that components will still be powered through the block in front of the observer but just not receive the update required to change their state.
This update can be artificially created with any redstone component that has an update range of 2, such as redstone dust or the front face of a repeater/comparator.
Components that have the ability to power blocks MUST necessarily have the ability to give updates up to 2 blocks away, otherwise BUD behaviour is created.
In the image i show a way to set create a BUDed state with the lever on the left and reset it with the lever on the right.