For the heck of it, I increased the number of workspaces to 3x3, in a session where this bug had occured, and Unity believed update-manager was open, but not assigned to any of the workspaces. It was not hiding on any of the extra workspaces.
For the heck of it, I increased the number of workspaces to 3x3, in a session where this bug had occured, and Unity believed update-manager was open, but not assigned to any of the workspaces. It was not hiding on any of the extra workspaces.