Zoe Bugs
First and most annoying bug: It's possible to extend the range of your Q by using R towards its firing direction after recasting it. In other words, Q>Q>R will extend its range. (you don't have to Q>R>Q) But, when using it towards a sleeping target Your Q will always disappear right before hitting your target. If it had missed the target, the range will still be extended. This has a 100% reproduction rate, and highly affects gameplay.
Second bug: Using your E when you're very close to a wall will sometimes make your E stop right after passing the wall, rather than continuing to its full range. This bug depends on which wall you're using it on and how close you are to it, but in the spots that it does happen it has a 100% reproduction rate.
Third and very minor bug: When being very close to a short wall, the indicator of your E will sometimes appear to be very short, despite the bubble flying much further.