Unfortunately, all these properties go together in the OS (Dock, App Switcher, and presence in Force Quit app). ( Launchbar users may be familiar with the pairing of these features.)
In Hook 3.3 public BETA 4 available for testing - Releases - Hook Productivity Forum we’ve made background mode the default as it was before Hook 3.3 betas. In the next release, we’ll look again at ways to move the focus back to the prior app , though this would need to be guided by an advanced preference because. We’ll be adding more functionality to the foreground mode, so we expect most users will not want the auto switch back. i.e., the point of the foreground mode being there will really be to use foreground mode options.
If one wants to maintain access to foreground mode benefits, then the best solution is to use the keyboard shortcut or menubar icon > “Show Hook contextual window” button to access that window.