A screenshot won't do much, but I'll start collecting them here along with the actions menu to try to help start debugging this. It may be hard to repro.
Out of about 125 games, 3 or 4 times the game had to end in a loss because the AI does not play its turn (maybe? I don't have access to logs, so unsure exactly what's going on). It is not a crash, because I'm able to open Settings and Menu. I'm able to change settings, I'm able to exit the game and accept the defeat modal. Each time I've also been able to end my turn, the button changes from active to disabled as it should. But then the AI doesn't play.
Version 4.0.1 on https://sparklmonkey.itch.io/element-revival
