Trackpad multi-gesture doesn't work while mouse is clicked
I used to drag and drop files from desktop to finder using my magic mouse while desktop is shown with four-finger spreading on trackpad.
<As in showing desktop with 4-finger spreading, clicking a file on destop, 4-finger pinching to go back to finder, and dropping the file on finder>
After the recent update to 10.7.2, it doens't work. With mouse-click on a file on desktop, the entire trackpad-gestures don't work at all (no space movement, no mission control, & no desktop showing as well).
I thought BTT might be a culprit but there was no luck when I tried it again after disabling BTT.
I can't find any option to enable this multigesture with mouse-click on system preference.
Is this a glitch of 10.7.2 or am I missing something?
I'm using MBP mid-2009 and all softwares are up to date together with my iOS devices.
MacBook Pro, Mac OS X (10.7.2), Hooked up with other iOS devices