I just discovered that this no longer works in Chrome or Edge browsers for Windows.

It does work in Firefox, but it is extremely tedious.  You must move the mouse very slowly and carefully when dragging an invoice line to a new position, and watch for the red circle with a dash to change to a green circle with an arrow, which indicates that the line can be dropped in that location.  You may need to move the mouse pointer slightly to the left or right to find the tiny spot where the circle will turn green.

Even when you get the green circle, it is virtually impossible to know exactly where the line will be dropped.  They will often "snap" one row above or below where you intended.  In my experience, it takes several tries to move each line.

This feature needs to be fixed, but it would be better if QBO also allowed quick sorting of line items by date or another column.

And it would be good if Intuit re-released the QBO app for Windows, which was free from these browser quirks.