I am on Version R58.9 Build 27.1.58.9 Quicken Classic Business & Personal and Windows 10 Home.
The Security Report is correct showing the correct sales. The Portfolio Report with Closed Lots shows the correct date that shares were sold but half of them show the wrong number of shares sold although the Cost Basis is correct for the real number of shares sold. This security has 1 lot and has 14 sales.
You may/will remember that last month I had a problem with: "I have 1 security with 1 lot and that lot's Cost Basis does not equal the Total Cost Basis." That was resolved. I never looked closely at the Portfolio Report with Closed Lots and don't usually use the report (particularly when the security only has one lot as this one does although I think the report could be more helpful if the security has more than 1 lot).
I don't know if there is any easy fix for this.
I have included the Security Report and the Portfolio report with Closed Lots: