State/county field hanging when it can't find any when creating a store.

[UVLabs]

State/county should be populated

State/County field hangs

Select "Saint Lucia" from the list of countries when creating a store, or "Saint Kitts & Nevis" or another lesser known country. The state field will hang on "loading..."

Not sure what might be causing this exactly but if it's a case where State/Counties can't be found, then I recommend this library: https://github.com/harpreetkhalsagtbit/country-state-city

It's pretty well populated with State & counties.