Several Syndra Bugs
First one should be obvious
https://youtu.be/edFaIgK6_OI Here her w just randomly goes on CD without being used
https://youtu.be/FU_DQYls7qk Last but not least, targets get out of untargettable state considerably earlier than they're being damaged by w so attacks(minions in this case) can go in between landing and w dmg, stealing your gold/last hit.