The web map I'm having trouble with is here. I have cleared the caches and browsing histories for IE 11.1425 and Chrome 83.0, but the problem persists. The Zoom In/Out tools, Locator tool, and Zoom to Tank tool won't work. The only solution has been to open the web map in Firefox 77.0. No one else has experienced the problem and it is the only web map where I have experienced the problem. Could the aggregated points that is first displayed cause some problem with re-drawing once a zoom tool is used?