When I request to add a new list item, the command opens behind and active window. How do I get it to open in front of the active window?

Hello there, @DBlock.

Usually, this error occurs when your data is damaged or corrupted. We can run the Verify/Rebuild tool utility to detect the data damage. Here's how:

1. Go to the File menu, and then select Utilities.
2. Choose Verify Data.
3. If QuickBooks detected no problems, there's no further action needed. If you receive a message, "Your data has lost integrity", the file is damaged. Just continue to Rebuild Data to correct the problem.
4. When you Rebuild Data, you'll receive a message to back up your company file, just click OK. The utility starts as soon as the back up is finished.
5. Click OK when you get the message "Rebuild has completed".
6. Run Verify Data again to check for remaining data damage.

Feel free to read this article for more information: Resolve Data Damage on Your Company File.

I've also added this article about adding a new item list in QBDT: Add, edit, and delete items.

Don't hesitate to drop a comment below if you have other questions. I'm always happy to help. Have a great day!