-When adding an item on desktop & then immediately trying to use it on another device I had to manually open BitWarden & pull down to refresh for the item to show up. It wouldn't auto-refresh when opening in Safari or another app, I had to open BitWarden itself to force a refresh
-First class support for Apple Watch. Apple watch support on 1Password for desktop use while my MBP is in clamshell mode works fantastic. When not in clamshell it lets me unlock either via TouchID OR Apple Watch, which is really nice. I almost never have to actually type my password. Plus you can add individual items to your watch for viewing.
-Sharing items to my family members is way simpler than with BitWarden. This was the one that pushed me over to 1Password actually, my girlfriend wanted to start using a password manager. The documentation for having family members/shared entries with BitWarden was pretty confusing and kinda wishy-washy on how exactly to setup that kind of thing. 1Password also recently added the ability to share an item to a user that doesn't use 1Password (via a link with the ability to set a time limit) which can be handy.
-1Password seems to do slightly better with finding authentication related fields in random web pages & apps
-In general I just find the workflow for adding new items/recalling old ones with 1Password slightly more intuitive than with BitWarden
None of these are dealbreakers for using BitWarden at all IMO, just QOL improvements via a paid-for more polished product. BitWarden provides a very solid experience especially considering the free tier, I just think 1Password is a little more polished.
Mind sharing what in particular you found to be QOL improvements? I'm curious.