Issue with WebMap filter: Blank fields

[AshleeWolf525]

When trying to filter a point layer by a single field with a drop-down menu with many options, the drop down menu shows blank options with a count of points. When I scroll down further, the options are filled in, but the count of points is zero. If I select one of the blank options with the point count, it will filter by the appropriate species, but it is a guess which one it is filtering by since I can't see the options. Any idea what is going on here or how to fix it? Much appreciated! 

Scroll down view: 

[RussRoberts]

Can you share the web map with me? If you cant make it public toss the map and layer(s) into a group and invite russell_jsapi.

Thanks!