Seems to be working in Community version 13.
Maybe it's not a full-on report, but it does tell you stock information (eg: Quantity on Hand, forecasted) at a specific date.
Reporting -> Inventory Report -> Inventory at Date -> Select + run the report.
It will take you back to the products list page, however, if you look at the QTYs etc they are at a specific date. Not your current levels. You can then do an export to CSV or whatever you need from there.
I guess it's not a full-on detailed report but it works for us to see QTY at a given date.