Cannot navigate or login to PHPList after campaign has started until its finished

Hello, I am running PHPList v3.2.7 on an server. Once I click Process Queue, I cannot navigate while I am still logged into the interface, or if I close the browser window, I cannot log back in until the campaign has stopped sending.

@mplieb There might be a few causes of this. The browser might be the cause, or table locking within phplist.

One way to work around this problem is to open a different browser (say chrome instead of firefox), or open a private window in the same browser.