Pop-Ups Not Working for Certain Features

RobertMatthewmanCTCLUSI

I have a feature service symbolized simply, where the style uses a single attribute with three values. The thing is, for one of the symbology values, popups don't show up when clicked. It's not an issue with the layer or the map, the other two symbology classes work fine. I can't find any other reports of similar issues.

RobertMatthewmanCTCLUSI

I found the culprit... I had created a custom symbology in ArcGIS Pro before publishing the web-layer, and somehow the hollow-fill style I had for the Fee polygons got published in the feature service as a "Structure" symbol type (I hadn't seen that before) and the feature's were only pop-up-able when clicking the outline itself! I added a very light fill and can now click on the center of the features and get normal behavior.