Navigating to Workspace page not found

[BradLewis14]

When navigating to the new workspace, or simply going directly to hub.arcgis.com, I cannot access my workspace as it returns a 'page not found' error. I can edit individual sites from ArcGIS content manager, but I cannot go up into the workspace itself. 

[PeterHodkinson]

This was identified as a bug affecting some specific ArcGIS Online organisations. It should be fixed soon but a workaround in the meantime is to remove the organisation shortname from the URL and navigate directly to https://hub.arcgis.com/workspace/users/self