Factorio Forums

Actual behavior:

When setting a custom minimum payload (e.g. 100 science packs), less than the request (e.g. 1000 science packs), even with more than 1000 science packs available in a buffer chest right next to the rocket and logistic bots already assigned to the task, the rocket will prematurely launch with a random payload size between minimum and requested size. All the extra expected items end up being immediately trashed.

The minimum payload size is compared only to the number of items in the rocket, ignoring additional items on-route or available in the logistic network.

Expected behavior:

The rocket is still waiting on items already in delivery. Preferably, rockets have a "maximum request time" in which it can still make additional logistic requests, and past that point it will only await items that are already on-route but cancel all still outstanding requests to the logistic network.

The behavior seem to have changed in 2.0.20.

The rocket silo still request a full rocket worth or items, still launches when the minimum has arrived. But now the outstanding requests are canceled forcing the bots to dump their cargo somewhere else. Then when the next rocket has risen to the launch pad it repeats, requesting a full rocket, launching on minimum, forcing bots to drop their cargo.

So now it's even slower than before but I think it no longer blocks spaceships from leaving this way.