Is there any server configuration that can cause a web app to stay in 'pending' state due to a different tab that is open with and waiting for the server to respond to his request? Just simple GET requests.
Happens in all browsers, but not cross-browser. E.g. if I open one tab in Chrome and second one in Safari, it isn't 'pending'. Same thing happens in incognito mode between two open Chromes. But whenever it's in the same browser, the second one is pending for the first to finish.