How do I correct the following collapse of bars?

In the first screenshot, if I delete the second ‘system break’ signpost the following measures collapse into a cacophony of nonsense. I must be missing something. How do I get Dorico to recalculate the measures?

The system break has the property set for “wait for next.” Either delete the system break, or un-toggle that property and all will be well.

Also, that’s one of my favorite arias of all time…

Hi Dan,

Thanks! I figured it out just as you were posting this solution. I’m wondering why this isn’t automatic?

Because “wait for next” is a user-assigned property that is inherently an override from the “default” spacing. If I’ve forced Dorico to do something, I don’t want it to decide I shouldn’t!