For the longest time I thought I was going crazy. I made 6 cobblestone generators side by side and 5 of them worked flawlessly. The 6th constantly broke at the gantry carriage section and no matter how many times I rebuilt it it still failed. If I moved it over by just a single block, suddenly it works. And I've finally narrowed it down to the Ambersol block above it.

What the generator is supposed to look like:

What it looks like when broken:

The Ambersol above it:

When I place an ambersol directly above my gantry carriage, it breaks off randomly. Can occur anywhere between 5 seconds to a minute roughly after starting the machine.

Ambersol create a light block below them no matter the distance, which is causing it to break if i had to imagine

I think it would just be a case of having the amber soul light block to have a tag so it’s replaced by create contraptions