I was testing the redstone wires changes with 2 pistons and discovered that if you spam-click a lever closer to the first piston it sometimes powers the further piston instead.
What I expected to happen was...:
The piston closer to the lever always powered first
What actually happened was...:
The piston further to the lever sometimes powers first
Steps to Reproduce:
1. Place down 2 piston like I did in the attachment
2. Connect both with a redstone wire
3. Place a lever closer to one of the 2 pistons
4. Spam click the lever
This is not a bug with the redstone order, while spamming, the piston that recently fired is still on cooldown, while the other piston that didn't fire, is ready to extend immediately.