Duplicate Multiple Manufactory Start Tier 3

[Nimmy]

My Tier 3 (dust) factories do not start when I tick the group start box, whereas the other tiers work perfectly well.
That's it!

 

[CrazyWizard]

My Tier 3 (dust) factories do not start when I tick the group start box, whereas the other tiers work perfectly well.
That's it!

are your factories the same level?

It only starts factories of the same level at the same time. it cannot mix different levels of factories.

 

[Konys]

As @CrazyWizard explained, it's intended to work this way; it's a duplicate of this report https://beta.forum.elvenar.com/index.php?threads/multiple-production.16457