Randomised loops

OS: Win10
PsychoPy version : 2021.2.1

I’m building a Simple Reaction Time experiment. I want to set the loop so every repeat, the stimuli list appears in a different random order.

I set the loop type in random and left in blank the random seed option but that only set a different random order for every subject not for every repeat of the loop.

A random loop with no seed should indeed give a different random sequence every time the loop runs. Can you show us a screenshot of your flow panel, and describe your design more fully, as it’s not quite clear what might be going wrong here?