This method is named "update distribution charge". What this method actually does is delete all of the fee adjustments on an order and all it's line items, then recreate them all from scratch. We call this from lots of different places all the time, and it's incredibly expensive. It even gets called from inside of transactions being run inside callbacks. Renaming it hopefully will add a bit of clarity.
This needs to be a lot more granular!
A spec has been added to check that the attributes for the order states
after "cart" ("address", "delivery", "payment") are retained if the
order is transitioned to completion, BUT currently this is passing
because it is the only shipping method available.
We can't always rely on other parts of the code been loaded first. We
need to declare dependencies so that they are always present.
I just ran into this problem in my dev environment.
