Cannot pay X for kicker cost
I click on "play with kicker" on Emblazoned Golem, I pay 2 mana and it comes into play with 2 mana in my pool, not allowing me to pay the kicker cost.
When Kangee, Aerie Keeper is cast with kicker it always returns as "X=0" regardless of what the actual X value was. Additionally, if the coloured portion of the cost is paid first (i.e. WU) then it automatically casts when enough mana is paid for X=0, instead of giving you the option of paying more. As a result, it does not place feather counters on Kangee, which renders is useless (especially when used as the commander).