Add the following to Advanced Settings in Open edX Studio to enable XBlocks for a course on Tahoe:
“drag-and-drop-v2”,
“google-calendar”,
“google-document”,
“library_content”,
“officemix”,
“openassessment”,
“oppia”,
“ubcpi”,
“pdf”,
“video-xblock”,
“video_xblock”,
“drag-and-drop-v2”