When I expedite from a storage to a launchpad, and then launch into space., it is moving PI materials from storage on the opposite side of the factory into other storage/launchpads messing up the expedite timers.
The only thing I can think of is that you must have some routes set from the storages/launchpads routing into wherever, so when you manually move stuff and it frees up space the storages/launchpads on the other side of the factory detect that there’s free space available and thus move things over.
If this isn’t it then that is a rather hilarious bug, it has to be.
Yes, this is a thing. Happens to me all the time.
In my imagination it’s the pressure of the launch forcing the materials into the other storage building. I use it to my advantage, get a free move of materials without a cool-down timer.