My '19 doesn't shutter and actually works properly.
I did owned a car that did this and found this corrected it. Get a can of that spray foam window cleaner and quad ot steel wool. Spray the foam on heavy in about a two square foot area and lightly rub the steel wool over the window. You might have to do this a couple times. Do this over the entire front window. Then try the blades in the rain or with a garden hose wetting the window.
The window had something on it that I couldn't see and regular window cleaner didn't get off. It stop my past issue.
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