So, after a recent night of updates (900+, if I remember correctly), it appears that the Activities tab is no longer present, and the hot corner no longer works? The only default tabs in the bar up-top are Applications and Places, and dragging my mouse to the top left corner results in no action. Oddly enough, the super button (Windows button) still works. It pulls up the Overview, and show all of the open windows, but the dock/dash and search bar are not present, just the open windows.
If anyone has any insight into what may be going on, it’d be greatly appreciated.