body {background-color: white;} inmarkdown.styles file) with Markdown preview Steps to Reproduce: Dark theme is applied; Applied a custom CSS (e.g. VSCode Version: Code 1.9.0 (27240e7, 2017-02-02T08:23:30.856Z) OS Version: Darwin x64 16.4.0; Under the following conditions, the Markdown Preview side indicator can not be seen.