3 Bugs Varus, Evelyn and Elise

Elise , Bug Sometimes spiderlings never show up even when Elise transforms

MAJOR Evelyn bug After Ulting Evelyn wil stand still and many times wil no longer engage in combat until she is the last member standing , This bug has been costing me way to many games and surrenders

If Varus gets stunned by glacial or ashe ult if he has ult ready no ult from varus and mana just disappears

why have ranked mode in bug infested games?