I've noticed a bug (or oversight) within the categories view in the sidebar when using different localization settings instead of English.
I am using the Windows client with localization settings set to Japanese, but it happens with other language settings as well.
As long as a category contains items, it shows it's name in the correct manner. If it's empty though, it defaults to English or Default in that sense. Not a biggie, but I thought it would make sense to point it out.
1Password Version: 7.3.657
Extension Version: 18.104.22.168
OS Version: Windows 10 Pro 1803 - OS build 17134.523
Sync Type: 1password.com