I just tried it again and it seems that the bug only happens when using a rapid pulsar using a redstone block entering a comparator which outputs a signal into the side of itself causing the redstone to flash. When I tried the command block with a lever it worked fine.
I just tried it again and it seems that the bug only happens when using a rapid pulsar using a redstone block entering a comparator which outputs a signal into the side of itself causing the redstone to flash. When I tried the command block with a lever it worked fine.