Hi there. Sorry for this one…
So I was basically losing (as usually) when… I reached half of the possible points (not more, mind you). The game stopped, awarding me the win, though I would have probably lost on equal points + less ants.
See for yourself. All the best.
Not a bug actually. From rules:
Victory Conditions:
You have harvested at least half of the total crystal on the map before your opponent.
You have more crystal than your opponent after 100 turns, or more ants if tied.
Thank you! You are right. I must have been dreaming or something that the behaviour was different previously. Makes no change… no wonder I keep loosing 
.