There is a bug in golems numbers. I've sent my golens to expeditions but when they comeback... they don't! They still appear on the map even when i've sent them to explore, but it's like i lose them in numbers (and with that i can't upgrade them).
Making my words smaller, the issue/bug here is that the number of golens doesnt change when i send them to expeditions, like it resets.
Otherwise the game is pretty good!