Anyone seen this before? This is from our internal 10.6.1 Enterprise. I built two apps on our Portal and made them publicly accessible from our network. I made Sherman Surveyor with the ESRI Configurable Apps. I made the MCFR one with Web AppBuilder
Sherman Surveyor works inside and out:
But from outside redirects to our internal names, giving this:
Tech support is stumped. Anyone else have ideas?