0.9.11, Win 10: Cast action limit applying to Yseros' Illusory Veil incorrectly

Yseros’ Trait in Gate of the Gods, Illusory Veil, causes her & her creatures to each cast a spell whenever any of your creatures cast it. To my understanding, the 15 action limit for casting is per creature; however, casts triggered by Illusory Veil are stopping after 15 casts between all creatures on the current turn.

I encountered this when testing Unanswered Prayers against her. My creature casts it once, then the first three enemy creatures cast it four times each, then their fourth creature casts it twice, for a total of 15 casts. The turn then ends.