Star Craft Co-op missions dont start?

My co op missions start, but then the objective doesnt seem to appear. played the balius mission for about 20 minutes without a timer, and stuck on 9 parts ?

Next mission was destroy 10 void shards, but im pretty sure the void shards spawn before the pirate ship normally… right?

So you cleared the entire map and the Balius never moved?

The 2nd pirate ship (in an enemy base) can be triggered before the shards at least. But you could still be facing a bug.