Not fixed for me. 10.13.4, 2013 13" MacBook Pro retina. So. Annoying.
Interesting, have had random Contacts issues with iCloud sync between my devices.
But the main issue with iCloud has been Calendar & iOS 11 that doesn’t sync at all.
Glad I didn’t upgrade to HighSierra yet to make this iCloud worst ever **** worse.
And that I saw this thread before doing it. Sierra is pretty ok with the iCloud sync that I use now.
Stopped use iCloud for Calendar. Using Calendar app on my NAS instead, it just works.
And engineers are fumbling in the dark about this lack of totally iCloud sync re Calendar & random lack of Contacts sync that stopped with iOS 11 for me.
Until I found this thread I thought the problems I’ve been having with syncing Contacts (and Mail and Calendar) were my own dumb fault, but it’s a problem many people are having and no one seems to have a solution. I’ve spent hours googling the issue and even bought David Pogue’s High Sierra “bible,” and haven’t found a fix. While it hasn’t been a disaster for me it has been a PITA. Shame on Apple!
Not fixed for me either on my '15 rMBP and another issue that just popped up. Once I edit a contact (say, I update their address or email), their profile picture will be gone... Only to appear again later. This gets annoying on my Messages where I'll see a contact picture one minute and gone another.
And yes, I reported this, they escalated me to a senior advisor who then passed it on to the engineers, and they had no idea about it or what to do...
It really is unfortunate that there is no solution. I am not holding my breath towards a further update, this will hopefully be fixed in the next macOS...