What you were expecting to happen, and what actually happened:
I was expecting the AI to take a turn after casting Natureborn Warden, but instead I got an extra turn, with no “extra turn” banner displayed
How often does this happen? When did it begin happening?
It has been happening to me intermittently since the troop was released, in the Class Trial. Perhaps 1/10 times. I have not yet discovered a pattern. I may have gotten extra turns I wasn’t expecting in other situations, but this was the most obvious.
Steps to make it happen again
Cast Natureborn Warden in the Class Trial, with unknown other conditions. It pains me to report an issue that is helping the players for once, but I would really like this game to be close to bug-free.
My video of the extra turn itself, not the “Born of…” Gems making a 4-match beforehand (I’m on mobile, so don’t have the ‘previous 30s’ capture feature, and cbf recording multiple battles to try catch it):