Yes this happens from time to time with tailors I’ve used in naples and it has had absolutely nothing to do with sending things out to factories. It’s ussually because they just don’t note your preferences or their corrections. My basic measurements don’t change, but let’s say I ask a tailor at the fitting to make the jacket a bit longer and the pants a bit wider and there is a bump on one of my shoulders. He’ll make the corrections but if he then doesn’t remember, write it down, or adjust his pattern or measurements then the next time the same issue may appear or perhaps he’ll misremember and do something different. But of course it is in his interest to get right the next time so he doesn’t have to redo his work. One would hope that after a few times (not 11) he should start to remember your preferences or at least write them down. But it is always good to remind the tailor. I find this problem is more commmon with old stubborn tailors.
I have also used a tailor (not from Italy) who believes that a suits style should be dictated by the cloth. Some cloths call for a harder shoulder or more drape or shorter coat or wider lapels, etc... for him some should look more 30s or 60s or 70s, etc... he is usually good about expressing this to me before he starts, and let’s me decide. I couldn’t even imagine having these type of conversations with a tailor from naples. And each of his suits has a style that is usually a bit different than the others unless I tell him I want it like a previous one.