I added a user and set him with the wrong permission (Administrator). I demoted his permission, and gave him permission for the correct workspace. However, when he logs in on his dashboard he is able to see "Lastest Comments" from Workspaces he no longer has access to.
I tested adding a new comment to a task in another workspace, and that is not showing up on his account ... so it looks like it is just showing the comments since before I updated his permissions.
Is this a bug or something I can reset somewhere?