Fiora main here to share some bugs
Many of my games are lost to how buggy Fiora is. Here are a few notable ones: Sometimes an enemy will get two vitals under them. I don't know whether or not the second vital actually works or not, but then the problem arises of which vital works. If you die while in your Q animation, when you respawn you won't be able to cast your summoner spells until you use Q again. If you ult at the same time as you deal damage to an enemy then the vital won't proc. Vitals are very buggy and will often not proc correctly. If an enemy minion is being teleported to your Q will still prioritize the invulnerable minion. Not sure if a bug or not but damn does it suck. Q prioritization is often incorrect and will target the wrong target. Riposte is buggy and will often not block damage or cc for the first quarter second.