Smart objects not updating across artboards - Photoshop

I've been having this same problem. I don't understand the reason for it, but I may havefound a workaround. The updating issue seems to be the difference between DUPLICATING a smart object through "duplicate layer" to multiple artboards versus COPYING the smart object (cmd+C). It's not as convenient, but extra steps of duplicating should allow you to update the SO changes across artboards, while for some reason copying does not (the equivalent of New Smart Object Via Copy). It's a real pain, and I've had to re-compose so many artboards because I didn't realize the difference, but I hope this helps!

Same issue happening with version 23.5. This is a bug with certain versions of Photoshop and should be remedied for the price we're paying for a subscription. As a user, having to keep track of linked files to update smart objects across multiple artboards  is a pain and feels like laziness on behalf of Adobe's dev team and QA team.  As a user, you should be able to have the smart object embeded in the artboards. 

One other option would be if you created Layer Comps in the SO and applied them to the SO instances in the containing document via the Properties Panel.

Can you provide the file?

You probably made a mistake like dragging an image into the file several times or using »New Smart Object Via Copy« to duplicate them.

Hi there,

That is the expected workflow, if you want the change to be reflected in other instances, then you should work with Linked Smart Objects: Work more efficiently with Smart Objects |

Regards,
Sahil