I've replicated those filters and got the same results, Davejon9.
While there isn't a reported case about this, I recommend contacting our QuickBooks Online Team. They can create one and send it to our Product Team. This way, they will take a look at this filter and email you for the update.
You can visit this link and choose your product to get in touch with our support team: Contact QuickBooks products and services Support.
As a workaround, you can export the report to Excel and remove those two vendors. Let me show you how:
- Go to Reports from the left navigation bar.
- Search for the Unpaid Bills report.
- At the top of the report, select the Export icon, then click Export to Excel.
- Save the file somewhere you can easily find.
- Then, open the file and filter it from there.
Fill me in by commenting below on how the contact goes. I'm always around to help if there's anything else you need.