Control: tags -1 + wontfix Thanks for your bug reported a long long time ago.
As announced in https://github.com/asciidoc/asciidoc/releases, the release 8.6.10 is the final release. The PR and issues upstream have been piling up over the last few years. Upstream asks to move to other tools such as asciidoctor. This one is quite tricky so I won't include it in the last package 8.6.10. Sorry for that. Joseph