When a workspace app features a streaming service and is configured to run immediately, the URL is automatically extended by "/streaming/fmedatastreaming/[repository name]/[workspace name].fmw" after workspace app was triggered.
Any user who likes to bookmark this page receives a 404 error code when trying access the page because the bookmarked URL including that annex is not working. For the sake of a better accessibility especially for non-professional users, I suggest to either hide/suppress the URL annex or let a workspace app also work when directly addressing the entire URL.