I have a scene with many collection instances of a collection containing a car and its wheels. The car has a material on it with its base color being controlled by an object info node's random output: enter image description here

Everything looks good as long as I am in material preview with the overlays turned off: enter image description here

But with the overlays turned on(or sometimes the other way around) or if rendered using the EEVEE render engine, all the cars will have the same color. enter image description here

It would be appreciated if anyone could suggest a solution to fix this problem(I don't want the colors to be controlled by position because the cars are animated) or report the bug(If this is a bug).

here is the .blend file: https://mega.nz/file/4whyzTYK#LYLMOGpAT3VvUi4j73Jg63W2p8sG_HRQ8L3E_A107z0

  • $\begingroup$ There are no Blender developers here and no-one here has any association with the Blender Foundation so if you think you've found a bug you should report it via Blender's Help > Report a Bug menu. Also see wiki.blender.org/wiki/Process/Bug_Reports $\endgroup$
    – John Eason
    Sep 10 at 16:35
  • $\begingroup$ I don't know the exact steps to cause this problem which is needed in order to report a bug. $\endgroup$
    – guest
    Sep 10 at 16:37
  • $\begingroup$ Well you've just described how to produce it in your question so I'd have thought that submitting that and your Blend file in your report should be sufficient. $\endgroup$
    – John Eason
    Sep 10 at 16:41
  • $\begingroup$ maybe wanna try another Blender version? i tried on 4.0alpha and it worked: [1]: i.stack.imgur.com/jFwNP.gif $\endgroup$
    – Chris
    Sep 10 at 17:39


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