The physics depend on the order in which the links are created

[Mikhail]

Tl;dr: the same configuration of joints and links produces different results depending on the order in which the links were created. The same construction created in a specific order produces the same result run after run.

Level 31. I've made a design that survives the whole convoy. I start doing optimizations. Two joints have extra cable support. I remove those, run a convoy, the thing breaks in 2 different places (one of which is in another room not even connected to the cable joints). That's fine. I put the cables back, run a convoy again. The thing breaks again in the same 2 places, even though an identical design had succeeded before. I make multiple runs, they all fail in the same way. I load the same design from a save that I created after it succeeded. I run a convoy multiple times, not a single thing breaks. I remove all the cables and reconnect them in the same configuration, but a different order. With a convoy, the thing breaks, but in a different way. I haven't moved a single joint in all this, only connected them with the same links in different order.

[That one random person]

WAHT?!