I have a workaround!  This has been happening to me for MONTHS.  I've suffered EXACTLY the same treatment from QB support.  It's IKEA level poor customer service and it's OBVIOUS they don't care.  If they read this, please don't reply saying I should contact support.  The ENTIRE SYSTEM is flawed and there is no point in trying to get to a person who will and can help a customer.  

@ptscoaching2019 :  The spinning wheel occurs when there is no name in the Customer field!  I don't get the spinning wheel when the customer name is filled out.  Simply add the customer name (and add them as new if necessary), click details and VOILA!  I hope this works for you