Are you expecting these settings to affect selecting an item with the mouse? This is not the case, these options control "going to an item" when navigating from a different pane (such as dbl-clicking on a search result or child item).
It would be very non-standard (and annoying?) to have the Data Explorer scroll a "just clicked" item to the top of the pane...
Note: that the "Single-click to expand an item" option essentially provides "Expand children when going to item" functionality for mouse click selection (disabled by default).
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