OMG! Ubuntu! published a tutorial about how to reset the Apps grid in GNOME 3.38.

How to Reset the Apps Grid in GNOME 3.38

Now that you're able to rearrange apps shortcuts in the Applications grid (one of many new GNOME 3.38 features) you might be wondering what happens what happens when you want to ‘undo’ changes and reset apps back to their original positions.

How to Reset the Apps Grid in GNOME 3.38