The repeater at the bottom has been locked and the signal will stay on even if the torch to the right is broken. You can do the opposite of this and keep the signal locked on the off state as well. This can be useful when you are working with multiple redstone signals and devices ...
Redstone comparators are redstone components that can either (1) maintain, (2) compare, or (3) subtract redstone signal strength. They can also be used to measure block states, like the fullness of a container. Like a repeater, comparators can dictate the direction of the redstone current ...
Repeaters that are locked will keep their locked state so long as the repeater that is locking it stays on. Repeaters will turn off if they do not have any inputs. When were droppers added to Minecraft? Droppers were added to Minecraft all the way back in 2013 as a part of the Red...
And that results in what you see above: the button has already turned off but the repeater is still on and therefor also the lamp. Not for long though, this only lasts for 4 redstone ticks (4/10th of a second). Of course you can easily delay this even further if you want, just ...
It is pretty easy to recreate this bug: Just connect a input with a 1 tick delay (repeater) and the inverted input (1 redstone torch = 1 tick delay) to a piston and switch the state of the input. Update 1.5.1: For pistons this bug is still not completely fixed because when receivi...