Board Thread:Support Requests - Designing Your Wiki/@comment-9605025-20170818035231/@comment-27958705-20170818222422

msg before incompletely wrong is. empty works. just makes no sense in the test page.

are u trying to hide empty mw-collapsible block? if yes, then that block is not empty, even if nothing inside. if u do not want empty block, then u have to deal with it inside the template.

also, u can use lua-based templates.