I agree, when quickfiltering for a specific item, it would be nice to be keep it on screen when leaving by default.
But there's an emergency workaround:
You can create a new hotkey "Shift+ESC" e.g., and run these commands:
Set QUICKFILTERCLEAR
ScrollSelectionIntoView
The latter command can be found here and is useful in other situations as well: Command: ScrollSelectionIntoView