https://bugs.winehq.org/show_bug.cgi?id=36797
--- Comment #5 from Esme Povirk madewokherd@gmail.com --- Gabriel Ivăncescu made an implementation of Marshal.IsTypeVisibleFromCom: https://github.com/mono/mono/pull/20876
Because Mono chronically ignores PR's, I merged that on the develop branch and will likely cherry-pick it for the next release.