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Annotations not visible until zoom in

The first picture is the unzoomed plot. As you can see there is a section near the origin where it appears no vectors are. However, the second picture shows me zooming into that area and there are vectors there. I am using the annotations to plot vectors. showarrowhead: true, arrowhead: 2. There are also 99 of them.
38%20AM

13%20AM

Could you please share a codepen?
You may modify this one if you like.
Thanks.