I have a client who uses the historical stock status report, and after the 2019 year-end update to GP version 18.2.1036, the report doesn't total correctly. Here are some screenshots:
Here's what the report used to look like on their version 18.00.0704 (they have a test environment and we were able to test it:
Here's what it looks like now: Every item is subtotaling.
I believe this is a bug - I know most clients don't use this report, but this one client does. I have confirmed the report settings are the same between the two environments, and neither is using a custom report format.