New Glacier Bay kitchen faucet installed last Thursday by reputable plumber, SKU # 209442, the type with a high arch that is movable back and forth. Noticed right away that a steady stream of water continues for about 10 seconds when either faucet or sprayer are first turned off, not just a few dribbles, but a stream as though the arch is emptying itself. I have had this style of faucet before and never had this problem.

Neither the plumber nor the 'specialist' at Home Depot know how to correct this issue, which to me is both wasteful and annoying.
Is there a fix for this besides replacing with another product?