I'm running beta versions of 1Password, macOS and iOS -- so, naturally, I expect some issues. I skimmed this beta forum for reports about my problem but am not seeing any. I prefer to sync via WLAN Server which I think is less popular, so maybe no one has spotted this yet.
When I open one of my devices to sync, it appears to complete the sync but the 1Password desktop app crashes every time. I've restarted my computer and my devices -- has not helped. I tried to attach a copy of the crash log (.txt) to this post but the "attach file" function shows text files grayed out -- so I guess I can't. So I uploaded it to my website instead -- link below.
1Password Version: 7.2.BETA-1 (70200001)
Extension Version: 7.2.BETA-1
OS Version: 10.14 beta (18A384a)
Sync Type: WLAN Server