After installing VM 3.8.9 10514 the mod_virtuemart_product shows as well parent products as child products. In my case parent product can't be ordered. It has two orderable child products. There are now all three products shown in the module instead of only the parent product.
Is there a way to show only the parent product?
I'm using the module to show the latest products.
If I uncomment in administrator/components/com_virtuemart/models/product.php line line 517 and 526 everything works as before.
I finally found the solution:
uncheck in configuration "Show also products, which are not in at least one published category."