Removing the vendor's name on the address portion of the check is another workaround to avoid double printing, @Kathi-Blair.
 

Let me share an update regarding the issue. The investigation report INV-92186 report that was mentioned above has been closed. Considering that you’re still experiencing the printing issue, let’s contact our QuickBooks Online Support so they can assist you further and get the issue fixed.
 

If you want to filter specific accounts or customers in your reports, you can check this article: Customize reports in QuickBooks Online
 

Please let me know if you have more questions about the feature or other concerns by leaving a comment below. Have a good day.