This plugin messed up Woocommerce product visibility

Some products were not showing on Woocommerce products list page. It took me a couple of days to narrow down the issue to this plugin. Somehow it messed up outofstock status of the products. Some products were shown as In stock, however in the database they were outofstock and there was no way to change that using Admin UI. Only when I deactivated this plugin I was able to finally update the stock status of the products.