I’m not sure why you can’t move your stroke/mask down so this doesn’t happen. But here’s a workaround, create a solid, the same color as your wave, place it below the wave and mask off the top part.
Johnny Cuevas, Editor
Thinkck.com
“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.