How to turn off visualization for ifsum()

I’ve somehow turned on some visualization for a cell with an ‘=ifsum(…)’ function.
Blue arrows span the columns covered by the =ifsum(), converging on the cell with the formula,
and all cells in these columns have either a blue dot or a blue arrowhead.

Not sure how I turned this on, and would really like to turn it off.
Visualization goes away when formula is delete, but returns on re-entering.
Attempts to clear formatting on the cell have not helped.

It’s the Detective, turn off with menu Tools → Detective → Remove All Traces.

Right you are! Not sure how I got that turned on. Thanks so much.

Probably by hitting Shift+F9 or Shift+F5 at some point…

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