Problem with Standard Notes

I like that I can share notes between my desktop and phone. Especially for a shopping list. But today I brought up that list on my desktop and an item wasn’t on that list that I knew I added. Turns out there was a duplicate list. It contained quite a few items. So then I quickly, but not carefully, compared them and deleted the one that appeared to not have the latest items. I don’t see how I could have done that but am simply noting if here.