It seems that "Replayable Battles" (caused by Riftborn singularity) stuck the game, the battle never starts, as if the IA cannot choose strategy, and the turn cannot proceed.

It also seems that for unknown reasons, sometimes even battles not fought in such sigularities become labeled as "Replayable", thus stucking the game.

I fear that this problem maybe one of the causes for the neverending pending turn problem...