Shaco is SUPER buggy idk the exactly but ik he has tons of bugs and the bug fixers are ignoring it but shaco is also weak ingame. he has no early since he does little to NO DMG and late game he still tickles unless your full build on top of a adc but hes a assassin hes supposed to do dmg and if u get invaded early ur just boned man because your forced to use your boxes for a good clear and if your enemy jg is smart enough for interrupt then your early is gonna be rough and hes practically useless in teamfights since he has no big form of cc like qiyana and he falls off like a proper assassin should but he needs a lead to be doing the dmg hes supposed to be doing usually in the mid game which is hard to get if the enemy team is smart and knows how to play against shaco.Shaco needs a mini rework or at least some buffs.
Nocturne is a interesting case because he was seen in MSI or sometime around that alot and all i want for noc is a buff because he gets outclassed by every assassin. he dosent do the dmg a assassin is supposed to until he gets a few items but then he just falls off SUPER hard late game. assassins are supposed to do big burst of dmg and have mobility but nocturne has none of that. nocturne is not as bad as shaco but he needs a few buffs or even changes to be up to par with other assassins. if you ever played these champs you'd know how weak they really are. I got pretty salty when voli and fiddle were chosen for the rework and not nocturne.