In general, when the code tries to connect two tracks, the channel will be at least 3 blocks wide, and a repeater will be placed in the middle to extend the redstone signal. However, there appears to be a case when the code tries to connect the same track to itself, which results in a 1-width block and no repeater. This can cause the redstone signal to decay and not reach further down the circuit.
In general, when the code tries to connect two tracks, the channel will be at least 3 blocks wide, and a repeater will be placed in the middle to extend the redstone signal. However, there appears to be a case when the code tries to connect the same track to itself, which results in a 1-width block and no repeater. This can cause the redstone signal to decay and not reach further down the circuit.
Best visualized below: