Experimentally, it’s my understanding that PreSimulation happens after legacy humanoid movement. The previous Task Scheduler diagram (from a few months ago) indicated this in the diagram explicitly. However, the new one doesn’t, and it seems to imply that any potential simulation (including humanoid simulation) occurs after PreSimulation. This caused confusion for me as I tried to trace down bugs relating to humanoid physics seemingly occuring before presimulation. I ended up referencing the old chart via WayBackMachine, and then it was clear to me what was going wrong.
Affected URL: Task scheduler | Documentation - Roblox Creator Hub