Product is available even is 0 in stock

[liberatumente]

Hello,
I have joomla 2.5.8 VM 2.6.22, PHP 5.5.30

The inventory of a product is in 0, meant has 0 product in stock, and the product is stil shown as available, any client can buy even ther is no stock. Configuration is seted to "No mostrar el producto" meant "not show the product"

Is this a bug? Any way to solve this?

Thanks in advance,

Carlos

[Milbo]

maybe a +-1 error, what happens when the stock is -1?

[liberatumente]

when the stock is -1 also can be buyed