ultimate hunter stacks doesn't apply on first level of 
's Ultimate. Is it a bug?
BrightWîngs1 votesYou have one stack did check the cool down before you got that stack?
BrightWîngs1 votesAlso when the cool down is like 100.(whatever seconds) instead of a flat amount then that probably means it does work because you have what 20% CDR from items Kayle level 1 base cooled down is 160 seconds 20% of 160 is 32 160 - 32 is 128 and the cooldown you have is 101.92 seconds it definatly does work.
XV Altera1 votesyeah, the indicated cooldown is 101.92 but the cooldown starts at 112 secs.
BrightWîngs1 votesthen it works