Emoji / unicode keyboard support (OS X)
I'd love to be able to use the emoji/unicode on-screen keyboard that's built into OS X. It's triggered via Cmd+Ctrl+Space, but does not seem to work in Vivaldi. An older issue has already asked this question but received no responses.
I don't know about the support of macos emoji in Vivaldi...
however, you could consider an extension for that.
I've mentioned that here
Vivaldi need to support macOS native advantages