Unable to Snap to Grid

i was trying to figure this out and it looks like you need to have grid snapping turned off and press just end not cntrl… on my keyboard, end is a blue secondary keystroke so i need to also press the blue fn button to use the end key. so by pressing end my actor moves to the ground. however it is a few “inches” above and not planted firmly on the ground. if i zoom down to the bottom i can see it hovering above the floor a little. is that normal?