The mac has a drag release delay on the touchpad.
Say you start to drag a file via tap+tap hold drag: pretty standard.
As soon as you release though, you notice the window is still attached to the pointer. No, you don’t have drag lock enabled (er, you might), you have some built in “feature” to keep the window attached even when your hand goes off the touchpad.
This can be useful but for me just messes with my workflow since it’s hard to predict.
Luckily, BetterTouchTool takes care of this, along with MANY other awesome features missing from the OS, including windows 7 window resizing, custom gestures (I have my 4 finger swipe moving spaces).
More on BetterTouchTool here:
To remove the drag release delay…
Install BetterTouchTool and navigate to its preference panel.
Go to the touchpad settings, and in the general tab, click the experimental drag button.
Let me know if it helped!