It's important that all your transactions are entered correctly for your books to be well-balanced. QuickBooks Online is a great tool able to show you a variety of reports so you can see the different multiple aspects of the financials of your business. I can point you in the right direction to customize reports.
To see a report, but filter it by a supplier, click on the Customize menu once you've clicked on a report. You can select Filter, then choose a filter for certain suppliers, or only one if you wish. If there isn't a filter option for the supplier shown, then it wouldn't be available to be applied for this report type, and another one would need to be selected instead.
If you have any other questions, feel free to reach out here.
The supplier report remains unchanged, and the dropdown functions properly to view individual suppliers.
Beforehand, could you please specify which supplier report you are referring to? This will help me assist you better.
If you're using the Modern view, here's how you can filter the report:
Go to the Reports menu.
Search for the report and open it.
Click Filter and set the following:
Select Supplier Name in the first dropdown.
Choose Equals in the second dropdown.
Tick the checkbox for the specific supplier's name.
Click anywhere on the screen to refresh and display the updated report.
On the other hand, if you're using the Classic view, see the steps below:
Follow the steps 1 and 2 above to access the report.
Navigate to Customize, then click Filter dropdown.
Check the Supplier box, select Specified, and choose the supplier's name you want to display.
Hit Run report.
If the issue persists, clear your browser cache to remove outdated or corrupted data, as this can sometimes interfere with QBO's functionality. You can also use other supported browsers as an alternative.