The only circumstances that I could imagine cracks forming with hydragas spheres is if they have lost all their nitrogen gas and have been pumped overfull with fluid to try and compensate for the low ride height.
This would give no suspension travel or compliance and transfer all the shock loads direct to the mountings.
In such a scenario the thing would be so uncomfortable as to make the car undrivable on any surface less smooth than a tournament billiard table.
"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"