It is being attempted to set a default value against the 'Location' attribute of the 'Project' object. It has over 3000 values that are returned. It takes over 5 minutes for all the values to be returned.
In a particular environment it is noticed that an error is thrown by the application that is similar to the following:
Server or Network Error
In other environments the pop-up opens without an error, when the browse button is clicked.
In a Browser Trace, through Developer Console, HTTP 503 is returned, against the HTTP call that is sent to the server, as part of clicking on the browse button.
Network issues for this particular environment, in the customer's network.
The pop-up would open without throwing an error outside of the customer's network.