It seems Chrome shows the cursor only on the padded area.
Try adding:
padding-left: 220px;
to the .drop_area_fileselect declaration in index.css, so that it looks like this:
.drop_area_fileselect {
cursor: pointer;
margin-left: -190px;
opacity: 0.0001;
position: absolute;
width: 220px;
padding-left: 220px;
}