Temporary mana gems completely break moonlight
Moonlight states that it triggers when the player ends their turn with exactly 2 mana gems remaining filled. I have observed now on many occasions against most plainswalkers that moonlight will in fact trigger under any of the following conditions: 1) 2 mana gems remain, 2) 2 mana gems remain with any number of temporary mana gems, 3) 0 mana gems remain with any number of temporary mana gems. I feel like only 1 should be valid, I could understand both 1 and 2 working if temp mana gems just don't count, but the existence of 3 makes this clearly a bug; It's particularly egregious when facing a green Planeswalker as they frequently have varying numbers of temp mana gems but don't have to do any work to account for that at all.
Temporary mana gems do count toward moonlight. Does it trigger with only 1 temporary gem? We are unable to reproduce.