Spring loading for all Dock items 
Drag a file over an icon in the Dock, hover, and the application will open. The behaviour is unchanged if the app is already open. This behaviour has been observed with Preview, Quicktime, and iWork (Keynote, Pages, Numbers).
- Tested on macOS: 
- Monterey
 - Big Sur
 - Catalina
 
 - Parameter type: bool
 
Set to false (default value) 
Spring loading is disabled for Dock items.
bash
defaults write com.apple.dock "enable-spring-load-actions-on-all-items" -bool "false" && killall DockSet to true 
Spring loading is enabled for Dock items.
bash
defaults write com.apple.dock "enable-spring-load-actions-on-all-items" -bool "true" && killall DockRead current value 
bash
defaults read com.apple.dock "enable-spring-load-actions-on-all-items"Reset to default value 
bash
defaults delete com.apple.dock "enable-spring-load-actions-on-all-items" && killall Dock