AP Gain Up passives do affect AP gain from using TP skills now. I don't know if it's a bug from the "huge version update" but i've tested with a lot of passives and the AP/JP Crystal card too and they all work.
want ask, how about card related Ap..like Job Crystal card (buy from special shop)? how much its gain? from which calculate? is gain only at start? or it gain Ap for each turn or atttacking?
and about the last Esper Tetra slypid, have ability board +AP how to calculate it?