Today I learned that WordPress doesn't support multisites with WordPress files in a sub-directory (any Composer setup) without rewrite rules for core files, see https://core.trac.wordpress.org/ticket/23221#comment:19
Today I learned that WordPress doesn't support multisites with WordPress files in a sub-directory (any Composer setup) without rewrite rules for core files, see https://core.trac.wordpress.org/ticket/23221#comment:19