Is your theme and plugin up to date?
Have you checked the settings in Woocommerce>Settings>Products>Inventory? Check the Out of stock threshold field. It may be set too high.
e.g If it's set to "4" and the seller has 3 products in stock, it will be displayed as Out of Stock.
I set mine to "0"
And my Low Stock field is set to "2"
DID IT SOLVED?Thank you for your reply!
Theme and plugins are all up to date.
Have the same settings as you.