Today, 1/22/24, I tried to create another invoice in the Microsoft Edge Browser, same as the previous attempt. The invoices are automatically marked as "Paid." I do not use Automatic Payments and have no way to disable that function because the program is very limited. 

I tried your suggestion with the Microsoft In-Private Window. The same issue occurred.

I tried to create an invoice in the DuckDuckGo Browser. It was not marked as "Paid" in this browser. Maybe it's because DDG Browser is stopping the QuickBooks's 3rd party trackers. It blocked 67 tracking attempts from GrowSumo, Akamai, and RELX Group during the quick test of creating an invoice. I'm not sure how theft of my data from Intuit approved 3rd parties play a role in the invoice function, but it appears to have fixed it by blocking them unless something additional is going on.

Considering sensitivity of data involved with this program, piggybacking of 3rd party tracking companies is very questionable.