The fontawesome support in Antora and Asciidoc is patchy, and works on some versions and in some ways. See https://gitlab.com/antora/antora-ui-default/-/issues/58 for a discussion about some of the design tradeoffs antora has considered for icon support.
The fontawesome support in Antora and Asciidoc is patchy, and works on some versions and in some ways. See https://gitlab.com/antora/antora-ui-default/-/issues/58 for a discussion about some of the design tradeoffs antora has considered for icon support.
I ended up hand-patching in https://github.com/asciidoctor/asciidoctor-docs-ui/pull/26/ (which was created but never merged), and that has reinstated the icons on the admonitions.
Resolves #34.