asciidoctor-epub3 with list test

To build epub

Open build/docs/asciidocEpub/asciidoc-test.epub in FBReader.

For your convenience, generated epub file is available via Releases.

Expected: list item text starts on the same line as list item marker

Actual: there’s a line break between list item marker and list item text.

Screenshot from FBReader 3.0.31 for Android (this is the latest version available as of 2019-12-20):

If <span class="principal"> is changed to just <span> in OEBPS/_chapter1.xhtml inside epub file, then lists are rendered as expected.