New answers tagged multi-touch
By my experience, multi-touch crashes on a per-app basis. I could quit the app and relaunch it, and gestures would be back. Apparently, sleeping the display and then waking up the system again will bring back crippled gesture. You can click button to do that, or just close the lid, or use terminal: pmset displaysleepnow; sleep 5; caffeinate -u -t 1 After ...
I had just done some testing to check this out when answering another question before I found my way here. That ability, at least on the Bluetooth Multitouch Trackpad, seems to be gone, at least for now. See the other answer if you want a few more minor details.
Simply assign 'fn' in Mission Control to 'show desktop' and you are all set.
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