That's not what I'm referring to. They're supposed to attack things you hit your abilities on but sometimes they just don't. Or they spin around aiming at champs and just don't attack them. Sometimes they even attack champs you don't hit your abilities on even when they aren't supposed to. They like to target nonchamps/minions/monsters, too.
Examples can be found on the Zyra main subreddit but here a few bugs.
Targets ALLY towers(kinda funny because they do no damage but attack really fast) which makes them completely useless if and when they refuse to swap targets
Targets things that I can only guess are coded as minions. I.E. Things like Rek'sai tunnels and Azir's sand soldiers.
Auto attacking a champion seems to fix them sometimes but not all the time.
Unlucky I guess