Posted by abelsromero on Apr 20, 2020; 2:08pm
URL: https://discuss.asciidoctor.org/Asciidoc-Table-of-contents-tp7915p7916.html

I understand you need to remove level 3 sections and below from generated toc. However, by default only level 1 and 2 are show (see 'toclevels' https://asciidoctor.org/docs/user-manual/#user-toc-levels).
That means that either the previewer or the build process you are using is interfering.