mission-control
I was trying to move a full screen app from my external monitor to the macbook screen after activating mission control by dragging and dropping. The app was not moved across screen. Instead only a silhouette was caught on the macbook screen. I managed to move the full screen app over after a second trial but the silouette from mission control is stuck on the macbook screen and blocking the top left part of the screen.
Please see the attached screenshot fyi.
How do I get rid of the silhouette?
"In addition, I would like to change the shortcut in 'Mission Control' which 'Move left/right a space', but doesn't seem like I can change it."
I believe I can help answer this part.
At first I thought that a drop down would appear, but it does not. All you have to do, if you want to use keyboard shortcuts (not sure about trackpad or mouse) is hit the key once the item is selected.
Above is a screenshot of the menu with default settings.
Below is a screenshot of the menu with moving to the right changed to "."
So, to recap: Highlight item to change, double click on current shortcut symbol (to highlight it), immediately hit new key for the shortcut.
Hope this helps some!
I get the same symptoms/failure. The following Terminal command fixes it for me:
killall Dock
But before you do that, run killall -s Dock to make sure it's only going to directly kill the one "Dock" process. Dock will restart and then mission control is working again - for me anyway. You can verify that the restart happened by looking at the process ID of "Dock" after the restart. Hope this helps!
Best Answer
Mission Control is part of the Dock process. Restart the Dock to fix it.