Hi there, temanuel-cityofc.

I appreciate the effort of going through the troubleshooting steps given by my colleague above. As I checked in my resources, there is a reported case about the double-clicking issue for other regions, such as India, ROW, and South Africa.

Since the issue persists, I suggest contacting our Customer Care Team. This way, they can further investigate to find the root cause of this issue and provide a fix. You can follow the steps provided by colleague @Fritz on how to reach them. 

I've added this article that you can browse to help you personalize your invoices in QuickBooks Online: Customize invoices, estimates, and sales receipts in QuickBooks. 

Leave a comment below if you have follow-up concerns regarding invoices or other inquiries in QBO. I'll be around to help. Keep safe!