Weird PDF to image conversion result

[Daniel Skiles]

All,
When I convert the linked PDF to image using 3.0.0-alpha3, I get the linked
PNG output.  Do any of you know where the horizontal lines are coming
from?  The lines don't render in Chrome or SumatraPDF.
https://drive.google.com/drive/folders/1Sgpp3KqskO3yvfCXPvLgdnWZulKSykQM?usp=sharing