In my case, the "hot corner" button (in the "multitasking" menu) is actually working OK. It is the "active screen edges" button that has no effect (the feature is always enabled regardless of the status of this button).
In my case, the "hot corner" button (in the "multitasking" menu) is actually working OK. It is the "active screen edges" button that has no effect (the feature is always enabled regardless of the status of this button).